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Will I have enough Power?

Last response: in Systems
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October 9, 2012 2:27:09 AM

I'm pretty set what parts im getting

PCPartPicker part list: http://pcpartpicker.com/p/jyRS
Price breakdown by merchant: http://pcpartpicker.com/p/jyRS/by_merchant/
Benchmarks: http://pcpartpicker.com/p/jyRS/benchmarks/

CPU: Intel Core i5-2310 2.9GHz Quad-Core Processor ($179.99 @ Newegg)
Motherboard: Gigabyte GA-B75M-D3V Micro ATX LGA1155 Motherboard ($59.99 @ Newegg)
Memory: Corsair 4GB (1 x 4GB) DDR3-1600 Memory ($17.99 @ Newegg)
Video Card: MSI Radeon HD 7770 1GB Video Card ($119.99 @ Newegg)
Case: Raidmax ATX-248NWU (Black/Blue) ATX Mid Tower Case ($44.99 @ Amazon)
Power Supply: Corsair Builder 430W 80 PLUS Certified ATX12V Power Supply ($24.99 @ Newegg)
Total: $447.94
(Prices include shipping, taxes, and discounts when available.)
(I already have spare hard drive/monitor/ optical disk drive from older computer)
(Im obviously open to change if anyone knows anything cheaper or better)

My main concern is the video card and my PSU. PcPArtpicker says it would only take up 239W but some stats on the video card say differently... Tiger direct says "Minimum PSU Wattage Requirement 600 Watt"
here
(http://www.tigerdirect.com/applications/searchtools/ite...)

Which site is lying?

More about : power

October 9, 2012 2:35:20 AM

You're fine the radeon 7770 is a efficient card.

I'd doubt your PC will even use 200 watts most of the time.
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a b U Graphics card
October 9, 2012 2:44:51 AM

PSU's are most efficient around 50% draw - you don't want to operate them near max wattage so one number is giving you your maximum power draw while the other is giving a PSU power suggestion.
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a b U Graphics card
October 9, 2012 3:02:18 AM

Wattage doesn't matter. What matters is +12V amperage of a PSU because this is the voltage used by graphics cards, CPUs, and most computer fans, hard drives, and more.

pcpartpicker is making recommendations based on the minimum necessary, but it's not accurate. However, AMD's recommendation is not accurate either.

Your PSU choice is arguably a little overkill, but I don't think that you'd find anything worth having that is cheaper than Corsair's CX 430W model.
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a c 294 U Graphics card
October 9, 2012 3:35:44 AM

Your PSU is more than adequate for the HD 7770. The card only requires 80W at the very max. That's a mere 6.7A at +12V.
http://www.hwcompare.com/11879/radeon-hd-7770/

If you only use one stick of memory, you will not be able to make use of the Double Data Rate of the RAM. However, you won't see any great loss of frame rate when gaming if you do stay with the single stick.
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a b U Graphics card
October 9, 2012 3:42:35 AM

clutchc said:
Your PSU is more than adequate for the HD 7770. The card only requires 80W at the very max. That's a mere 6.7A at +12V.
http://www.hwcompare.com/11879/radeon-hd-7770/

If you only use one stick of memory, you will not be able to make use of the Double Data Rate of the RAM. However, you won't see any great loss of frame rate when gaming if you do stay with the single stick.


It doesn't matter if you have one or thirty two modules, all DDR memory is DDR no matter what (although some, such as GDDR5, are dual-DDR, basically pretending to be QDR). Having only one module means that you are running in single channel instead of dual-channel and yes, it's a minor performance loss for most applications (although a few take a more major loss).
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a c 294 U Graphics card
October 9, 2012 3:48:13 AM

luciferano said:
It doesn't matter if you have one or thirty two modules, all DDR memory is DDR no matter what (although some, such as GDDR5, are dual-DDR, basically pretending to be QDR). Having only one module means that you are running in single channel instead of dual-channel and yes, it's a minor performance loss for most applications (although a few take a more major loss).

You are correct. I mis-spoke when I said DDR. I meant dual channel. I do that all the time. My bad.
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October 9, 2012 8:37:35 PM

Thanks for all the feedback. Greatly appreciated.
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a b U Graphics card
October 9, 2012 8:47:18 PM

You're welcome.
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!