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Recommend a PSU for £90 or under? - Page 3

post #21 of 27
Thread Starter 
Quote:
Originally Posted by AlphaC View Post


edit:

For Seasonic S12G 650W:
http://www.anandtech.com/show/7761/seasonic-s12g-650w-power-supply-review/3

XFX TS series is a rebranded Seasonic S12G

This kind of makes sense to me. I am not sure what wattage my system will be drawing when idle or, say, word processing - 30% or so? vs say, 60%, when gaming.

So what is your view on the 650W Seasonc S12G/XFX TS for my system - about right - or a noticeably inefficient choice... ?
Edited by SkyandSun - 3/25/14 at 12:57pm
post #22 of 27
Quote:
Originally Posted by SkyandSun View Post


This kind of makes sense to me. I am not sure what wattage my system will be drawing when idle or, say, word processing - 30% or so? vs say, 60%, when gaming.

So what is your view on the 650W Seasonc S12G/XFX TS for my system - about right - or an inefficient choice... ?

 

You'll be fine, but like I said, a 650W PSU would still be pretty overkill. Your gaming power consumption will be peaking at about 375W or maybe 400W at the absolute extreme most. Your idle will be at around 100-115W. So, that's anywhere from about 15% to around 61%. Your average power draw will be a lot less than 50% which isn't ideal, but at least you're not getting a 750W+ PSU.

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post #23 of 27
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

You'll be fine, but like I said, a 650W PSU would still be pretty overkill. Your gaming power consumption will be peaking at about 375W or maybe 400W at the absolute extreme most. Your idle will be at around 100-115W. So, that's anywhere from about 15% to around 61%. Your average power draw will be a lot less than 50% which isn't ideal, but at least you're not getting a 750W+ PSU.

It's not too late to order a 550W supply. It is just £15 more expensive than the 650W supply! (lots of PSUs out of stock it seems in the UK). In fact I'm thinking about switching this evening! haha
post #24 of 27
Quote:
Originally Posted by SkyandSun View Post


It's not too late to order a 550W supply. It is just £15 more expensive than the 650W supply! (lots of PSUs out of stock it seems in the UK). In fact I'm thinking about switching this evening! haha

 

It's more expensive?

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post #25 of 27
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

It's more expensive?

Yes. XFX XTR 550W modular vs the XFS TS 650W non-modular. Both rebranded Seasonic s12g as I understand it (although one is modular). The 550W is £80 vs the 650W which is £65. best deals I can find for both in the UK...

tempted to get the more expensive 550W though, for energy efficiency and the fact that it's modular. what do you think ?
Edited by SkyandSun - 3/25/14 at 2:18pm
post #26 of 27
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

The 750W minimum is for peak-rated PSUs. The typical 750W peak-rated PSU would have a +12V capacity of about 540W (which is 45A on 12V power). However, you wouldn't even need that much. Check this out:

http://www.guru3d.com/articles_pages/radeon_r9_290_review_benchmarks,10.html

With one R9 290 under full load in their system, their PSU pulled 372W from the wall outlet. Their CPU was idling, so I have to add up to 85W for your CPU under full load. This makes the PSU pulling 457W from the wall outlet (while the 290 and 4670 are under full load simultaneously). This means that if the PSU is 90% efficient while pulling 457W from the wall outlet, then the computer is pulling 411W from the PSU. Your power consumption while gaming will be even lower, never exceeding about 375W.

Therefore you could power this with a good 450-550W PSU very easily.

The best one that I can recommend to you for under £90 is the 550W Antec TruePower Classic:

http://uk.pcpartpicker.com/part/antec-power-supply-tp550c

I guarantee you that this will have all the power that this build will ever need. It's also a high-quality unit as well.

Can I just also double-check - the GPU I have chosen is already OC'd so presumably might draw more power than stock 290. Will the 550W still be the right choice... ?

I am making the decision between the more expensive 550W (but modular) or £15 cheaper 650W (non-modular). Both based on Seasonic S12G. Tempted by the 550W because, as I understand it, it will be more efficient given my system's probable power usage.

Thanks all.
post #27 of 27
Quote:
Originally Posted by SkyandSun View Post


Yes. XFX XTR 550W modular vs the XFS TS 650W non-modular. Both rebranded Seasonic s12g as I understand it (although one is modular). The 550W is £80 vs the 650W which is £65. best deals I can find for both in the UK...

tempted to get the more expensive 550W though, for energy efficiency and the fact that it's modular. what do you think ?

 

Oh, no wonder it's more expensive. It's modular vs. non-modular.

 

I am biased toward modular PSUs myself. :)

 

Quote:
Originally Posted by SkyandSun View Post


Can I just also double-check - the GPU I have chosen is already OC'd so presumably might draw more power than stock 290. Will the 550W still be the right choice... ?

I am making the decision between the more expensive 550W (but modular) or £15 cheaper 650W (non-modular). Both based on Seasonic S12G. Tempted by the 550W because, as I understand it, it will be more efficient given my system's probable power usage.

Thanks all.

 

It's factory overclocked and probably not very far either. The voltage is probably not even increased either. So, the power consumption wouldn't be that different from stock.

 

I'd guess that it will only be slightly more efficient - perhaps not even noticeable.

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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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