28 réponses à ce sujet

[Tyrax Lightning]

I'm using an Okia PSU, & recently learned that it's a bad brand, so i'm researching a replacement. I found 6 candidates & ask for feedback on which is the best bet.

750W contenders:

http://www.newegg.co...1-011-_-Product <----- This is lookin the best bet, but i'm unsure.

http://www.newegg.co...1-025-_-Product

http://www.newegg.co...1-026-_-Product

600W contenders:

http://www.newegg.co...1-017-_-Product

http://www.newegg.co...1-010-_-Product

http://www.newegg.co...0-023-_-Product

If I get a 750W, then it'll take time to build the funds for it, but if the feedback on them makes them look worth the trouble, then i'll do it.

I also ask for intel on the difference between a 'modular' PSU cable & a 'non-modular' PSU cable.

Many thanks for your time. I'm a novice at PSUs & don't wanna make a mistake. (It was someone else that got the original Okias & they didn't know about the quality problems with the brand either.)

[mrofni]

I would also look at the Corsair TX750W, or the Corsair TX850W. 750W for $110 and the 850W for $130. USD that is.

[Xiphias]

A modular cable unplugs at both end, an unmodular cable only unplugs at the device and stays attached to the PSU.



Why the two different ratings? As a rule if you need a high power PSU then they typically don't last as connectors will change. Buy what you need for the next five years and if you get more life out of it then be grateful you've saved money.

[Althernai]

Tyrax Lightning wrote...

750W contenders:

Why do you need 750W PSU? I'm having trouble thinking of a system that would require one without including two high end graphics cards and if it takes you time to raise funds for the PSU, you probably can't afford those. Figure out how much your system uses and get something appropriate.

Regarding your last 600W PSU: I've never heard of Logisys and the reviews aren't particularly good. Why do you think this is better than Okia?

[Sa Seba]

Can you give us your system specs?
600 Watt should be enough, 750 might be a good idea if you are going for sli/crossfire in the near future.

I have that one in your first link. it looks nice and is bloody stable, backed up by many good reviews. The downside is the amount of long cables you have coming with it.
The second is a nice, too. It is build by seasonic, which is top notch.

This one: Corsair 650TX   should be more than enough for any system out there (except high end dual gpu's), while being stable, reliable and inexpensive on top of that.

Modifié par Sa Seba, 10 décembre 2009 - 02:52 .

[Lord Grimnar_AzurieL]

do your research on what your computer needs.

an example:
i was using a 1000w speedpower PSU (i have 4 hard drives and 2 graphics cards, extra sound card) and my comp wasnt running properly.
i seems that my graphics cards needed 12v while the PSU had only 1 12v cable. hence i had 12v split between 2 GPU's and as a result they werent working properly. the PSU was really designed for a 5v system (servers mainly). after research i found that a corsair PSU would work well for me and that i didnt need anything more than a 620w.

so if you need a bigger PSU than 620w i would be very suprised. by then again if its a server computer you might need a bigger 1.

hope that helps mate

[Tyrax Lightning]

Doh! Ya'all are right, it would help ya advise me if ya knew my goal. My goal is that my current puder is years old & not good enough for DA:O, so i'm trying to use my xmas & birthday gift power from my relatives to upgrade my puder.

Atm, my plan is currently:

Motherboard: http://reviews.cnet....g=mncolBtm;rnav
CPU: http://www.newegg.co...5-057-_-Product
Graphics Card: http://www.newegg.co...N82E16814500115
RAM: http://www.newegg.co...0-435-_-Product

I will combine these with stuff I already have here to build an upgraded puder. I'm hoping I get 2 of the above for xmas, & the other 2 for my birthday, Jan. 13.

During my surfing here on the forums, someone asked about Graphics Card issues & some suggested PSU fault as a cause. I recommended him an Okia PSU since i'm on my 2nd one, & Gorath Alpha then warned me of Okia's bad rep. My 1st Okia blew up my prior Motherboard & CPU before my current ones i'm using now, & at the time I didn't know that was unusual. Gorath Alpha warned me that I was wrong & that PSUs are NOT supposed to take other puder parts with them when they fail. Now that I know, I wanna get a better PSU for the new puder building instead of reusing my current Okia PSU.

That's where this thread comes in. PSUs are an area of my puder knowledge where i'm still a humble padawan, & I think it wise to seek advice on PSUs to try to avoid another mistake like Okia. I'm unsure if I wanna go 600W, or 750W. I think 600W would service my puder now, but i'm unsure if it would be wise or overkill to go 750W now & be covered for now & possible future upgrading. I dunno how to plan my future upgrading, so I wonder if 750W would keep my options open, or only overkill my needs & fail to justify the cost. For example, i'm gettin 2 sticks of RAM now (hopefully) but dunno if i'll be able to get more later. (Dunno when, but Windows 7 is in the future too thanks to their pigeonholing XP service termination, eventually.  Since I puder game play on my puder, i'm gonna go 64 bit so i've planned my puder build accordingly & made sure the upgrade stuff is 64 bit compatible.)

Many thanks for your feedback & time.

Edit: Typo repair.

Modifié par Tyrax Lightning, 11 décembre 2009 - 02:00 .

[Xiphias]

For a modest system like that 600W is far more than you need, as Grimnar_AzurieL said you get a 600W Psu if you've got two graphics cards and four hard drives not a single modest mid-range graphics card. 400-450W should be plenty, maybe go up to 500-550W if you want the possibility of adding a second mid-range graphics card in the future (although It's never been worth it in the past).



There are some very highly rated ~500W power supplies like the Corsair HX-520 and the Enermax Modu82+ 525W (which is what I'm using).



Also, are you sure about the choice of components? I'm from the UK so I've no idea about how the prices or models stack up over there but the 9800GT is getting on a bit now and I'd have doubts about the CPU as well.

[Althernai]

Tyrax Lightning wrote...

Atm, my plan is currently:

Motherboard: http://reviews.cnet....g=mncolBtm;rnav
CPU: http://www.newegg.co...5-057-_-Product
Graphics Card: http://www.newegg.co...N82E16814500115
RAM: http://www.newegg.co...0-435-_-Product

Do you have any reasons for these particular components? They will certainly play Dragon Age, but you are paying a sustantial amount for obsolete technology. The RAM is OK, although the price is a bit much -- if you look around during sales, you can find something similar or better for less (I just bought a 4GB set of DDR3-1600 RAM during one of the Black Friday sales for $80). Everything else though...

Core 2 was an awesome architecture, but it is long past the point where you want to build a new system based on it. If you pay $30 more for the processor and roughly the same thing for the motherboard, you can get a Core i5 750 which is better than that Q8400 in every way. If that is too much for you, you can go with AMD and get a 3.0 GHz Phenom II X4 945 for about the same price (actually $3 less right now on Newegg), save money on the motherboard (you can get a decent one for under $100) and still get better performance than the Q8400 (though not as good as the Core i5). It just doesn't make any sense to buy Core2Quads now -- either go a bit higher for the Core i5/7 family or a bit lower for the Phenom II's.

Your choice of video card is also strange. You do realize that the 9800 GT is just a relabeled 8800 GT, right? And, for reasons I don't understand, the one you linked to is underclocked for some reason. The reference 9800 GT has Core/Shader clocks of 600/1500 whereas the one you're looking at only has 550/1375 (check the specifications tab). I would not shell out $109 for an underclocked version of a 2 year old card. If you're willing to spend $36 extra, you can get one of the new Radeon HD 5750 cards. If not, you can get a Radeon 4770 or something of the sort for roughly the same price as your 9800 GT.

I think 600W would service my puder now, but i'm unsure if it would be wise or overkill to go 750W now & be covered for now & possible future upgrading. I dunno how to plan my future upgrading, so I wonder if 750W would keep my options open, or only overkill my needs & fail to justify the cost.

I would wager it's overkill unless you plan to upgrade to Crossfire/SLI sometime down the line. As time goes on, you can usually get parts that have greater performance while using less power; that's a direct consequence of the shrinking of semiconductors.

[Tyrax Lightning]

Oh crud... I've already given the list of those parts to my mom for use a couple of weeks ago... I screwed up that bad? & I only needed a 500W PSU max?



My family tree is a bit poor, so I wasn't lookin at state of the art stuff. Even that list is so fierce a price range i'm not even sure i'll get all 4 even for xmas & birthday combined. I also dunno if I can change the plan anymore or if it's already too late. I hope I haven't built a puder that'll deserve to get blown up by my Okia...

[Tyrax Lightning]

To put my situation bluntly, my current not strong enough puder is a M3A-H/HDMI motherboard with an onboard ATI Radeon 3200 HD Graphics chip that has proven inferior to Graphics Cards, CPU is an AMD Athlon 64 X2 Dual, & only 2GB of RAM that is .25GB faulty because of some stupid design flaw. This puder is about 3-4 years old. This is how poor this family is.

The puder I had planned looked godly compared to what I have now.

[Althernai]

Well, you didn't screw up that badly, but if money is important to you, you could have saved around $60 by going with something like this:

AMD Phenom II X4 925 2.8GHz for $141
GIGABYTE GA-MA770T-UD3P for $80
Radeon HD 4770 for $115

This would definitely give you better performance than what you listed and you wouldn't need more than a 500W PSU for it (your current build probably doesn't require one either). The other drawback of the Core 2 build is that if you ever decided to upgrade it, you're going to start from scratch again -- there aren't any new CPUs being made for LGA 775, the old ones will get progressively harder to find (and probably stay expensive) and that underclocked 9800 GT is not going to be worth carrying over. But if you can't change it now, that's OK -- what you have will work too, it's just not optimal.

[Sa Seba]

Can you still somehow change the plan?
I came up with that:

AMD Athlon II X3 435 Rana 2.9GHz - $89.99
SAPPHIRE Radeon HD 5770 - $164.99
Plus the motherboard Althernai listed - $80

That's a total of $340 and will give you enough power for future games as well.
The Radeon 5770 supports DirectX 11, which will be implemented in lots of games to come out next year. Check out this Review.
The AMD 435 is according to benchmarks close to equal in performance to it's bigger Phenom II brother when it comes to most games and applications and is using a bit less power as well.

Modifié par Sa Seba, 11 décembre 2009 - 07:42 .

[Tyrax Lightning]

Too late to change the plan, but not PSU choice. Unless xmas & birthday roll around & none of the above components are actually obtained, it looks like i'm gonna be a puder fool for awhile. Next puder upgrade, i'm gonna look for expert advice for puder upgrade rather than solo it.



I'm gonna look up 500W units. I'm glad I don't need more than 500W, since that'll reduce my PSU cost, most likely.

[Tyrax Lightning]

Found 2 possible 500W PSU candidates:

http://www.newegg.co...1-016-_-Product <----- This looks the better of the 2, but i'm gettin real advice 1st since i'm not batting a thousand at puder building.
http://www.newegg.co...1-004-_-Product <------ This one has reviews reporting a loud fan. I dunno about this one...

Many thanks for all the feedback & help!

[Althernai]

The first one is fine.

[Tyrax Lightning]

I talked to my mom, & she said she couldn't make any guarantees, but the plan MIGHT possibly be changable. Can anyone recommend a choice of RAM? I remember I didn't bat a thousand with that choice either.

[Althernai]

The RAM was the only component of that build that was fine as it is. There are no significant differences in RAM unless you intend to overclock -- just buy something with a lifetime warranty from a well known brand that is currently on sale. What you have is OK; this Crucial 4GB DDR3-1333 would also be fine (it runs at a slightly lower voltage and you get $9 savings upfront rather than a $10 mail-in rebate).

[Tyrax Lightning]

Cool! I didn't fully strike out!



I've compared the specs between the 2 RAMs & it's lookin like a tough call. Heat Sink vs better price & lower power use. Plus Rebates tend to be a snotrag to deal with. (Rebate systems are stupid. Why don't they just simply either do a sale, or just cut the price?)

[T1nk3rb311]

http://www.newegg.co...N82E16817182188



^^^^^^



This is all the PSU you will need. It is a phenomenal price, and works amazing. Plus, it's modular, so cable management is a breeze.



I'm running 2 4890s, a Phenom x2 3.2ghz to 4.1, and I've got 6 hard drives.



Rosewill is Neweggs house brand, kinda like how grocery stores have there own brand. I promise you it's top quality.



(Yes, I know it sounds like a commercial, but thus PSU is such a great deal, and you won't need to upgrade it for a long, long time.)

[Tyrax Lightning]

I've sent the plan change to mom, & we'll see what happens.

I decided to stick to my 1st RAM choice. The 2nd choice's price & lower voltage was attractive, but I decided I really wanted the 1st RAM choice's Heat Spreaders, partially because i'm in WA & the summers can sometimes get kinda hot so puder heat can become an issue, partially because the Heat Spreaders might justify the RAMs slightly higher cost by reducing the need for Case Fans, & partially because this RAM choice had nothing but 5 Egg reviews only & that looks good. If the other RAM had heat spreaders too it coulda won instead. Choice 2 is likely the better choice for those living in colder regions.

(I've actually had prior WA summers where my puder has had to emergency shutdown itself to avoid overheat. I don't dare underestimate it's risk.)

Many thanks for the feedback!

[Tyrax Lightning]

T1nk3rb311 wrote...

http://www.newegg.co...N82E16817182188

^^^^^^

This is all the PSU you will need. It is a phenomenal price, and works amazing. Plus, it's modular, so cable management is a breeze.

I'm running 2 4890s, a Phenom x2 3.2ghz to 4.1, and I've got 6 hard drives.

Rosewill is Neweggs house brand, kinda like how grocery stores have there own brand. I promise you it's top quality.

(Yes, I know it sounds like a commercial, but thus PSU is such a great deal, and you won't need to upgrade it for a long, long time.)

Many thanks for feedback!  Though i've already learned that I don't currently need more than 500W at this time. Any bigger would be too overkill to justify the cost.

[Xiphias]

Tyrax Lightning wrote...

I decided to stick to my 1st RAM choice. The 2nd choice's price & lower voltage was attractive, but I decided I really wanted the 1st RAM choice's Heat Spreaders, partially because i'm in WA & the summers can sometimes get kinda hot so puder heat can become an issue, partially because the Heat Spreaders might justify the RAMs slightly higher cost by reducing the need for Case Fans, & partially because this RAM choice had nothing but 5 Egg reviews only & that looks good. If the other RAM had heat spreaders too it coulda won instead. Choice 2 is likely the better choice for those living in colder regions.

I'm sorry to say it but you may have made another 'odd' choice there. 'Heat Spreader' always used to be code for 'bit of metal stuck on to make the ram look cool' since as a rule ram doesn't use up much power and doesn't get hot enough to need cooling unless you're overclocking. This was a few years ago, but given the small surface area (lack of fins) of that ram I suspect it's heat spreader is still mainly for looks rather than cooling. 

Still, if it's the same cost and speed it doesn't matter much. Ram generally makes very little difference at the moment as the bottleneck is often the connection to the CPU rather than it's speed. (For example, the Q8400 you had originally is connected by a 1333Mhz FSB to the ram so your bandwidth will be limited to that provided by dual-channel DDR2 667Mhz.)

Modifié par Xiphias, 12 décembre 2009 - 05:49 .

[Althernai]

Tyrax Lightning wrote...

I decided to stick to my 1st RAM choice. The 2nd choice's price & lower voltage was attractive, but I decided I really wanted the 1st RAM choice's Heat Spreaders, partially because i'm in WA & the summers can sometimes get kinda hot so puder heat can become an issue, partially because the Heat Spreaders might justify the RAMs slightly higher cost by reducing the need for Case Fans, & partially because this RAM choice had nothing but 5 Egg reviews only & that looks good.

A few things:

1a) All heat spreaders do is facilitate the transfer of heat from the part to the air in the case so they don't really make a difference as far as your need for case fans goes unless that specific part is overheating.
1b) Under all but the most bizarre circumstances, RAM does not overheat -- your CPU and GPU would both probably go before the RAM does. Therefore, the heat spreaders are mostly for show (they look neat though).

2) The higher the voltage, the more heat a part generates (the power dissipated by a circuit scales quadratically with the voltage). So in fact, with everything else being the same, RAM running at 1.65V produces about 21% more heat than RAM running at 1.5V. Of course, the heat produced is negligible to begin with so it doesn't really matter.

3) Beware of estimates based on small samples. The RAM does have only 5 egg reviews... but it also only has a grand total of 3 reviews. That doesn't tell you very much.

All of that said, your choice is fine (either RAM would do), it's only your reasons for it that don't make sense.

[Sa Seba]

So, which components did you choose at the end?