PSU Wattage Question?

colt1911

colt1911

New Member
I'm in the process of building a new system consisting of the Asus P6T Deluxe mobo, a Core I7 920 cpu, a Evga 8800 GTS ( G92 ) gpu and 6 gigs of G.Skill DDR3 memory , along with 3 hard drives and 5 120mm fans. Also will be using a Asus Xonar sound card. I think that covers everything. I have a Antec true Power 650 at the moment and I hope it will be enough. Thanks
 
Cool , thanks if I decide to add another 8800 for SLI will it still be enough or should I buy a better one?
 
Think the 8800GTS recommends 30 amps on the 12V rail on the average system running SLI, doesnt mean the 8800s will pull 30 amps rather a system running them as a whole should have atleat 30 amps. Your Antec has about 50 amps Total on the 12V. So you have overhead. Adding 3 HD, sound card, fans, CPU, board and so on. Dont really think you should have a problem. I would give it a try before investing in a new P/S.
 
colt1911 said:
Cool , thanks if I decide to add another 8800 for SLI will it still be enough or should I buy a better one?
Click to expand...

StrangleHold said:
I would give it a try before investing in a new P/S.
Click to expand...

Exactly what I did. I have my system running on a 520watt PSU, the most I've ever seen it use is 460watts. At idle, I use about 260watts. I think you'd be fine.

Also, I heard that the I7's have a wattage limiter on them. I think it was something like 100 - 130 watts, which will hinder your OC'ing, but I guess it wouldn't be too bad for your PSU.
 
that PSU is fine. you'll be surprised at the recommended and what it actually uses. many people go running around saying you'll need a 700+ wattage PSU when doin SLI/xfire when it uses much less. video card manufacturers always over estimate the wattage/amp because that safegaurds them from newbies using cheap PSU. with a good quality PSU, 600 watts is more than enough for SLI/xfire. plug you system in a kill-a-watt power detector and you'll be surprised that it will only draw about 500watts (really depends on which GPU thought) for multiple GPUs

btw, looks like you'll have a great new core i7 system. wish i can afford that. and what do you need 6gb of memory for? 3gb is plenty...
 
Yeah, you'd be surprised the amount of people that over-estimate what they need. People could save themselves a whole load of money, but then again, I guess it's nice to have that extra headroom.
 
I know this is an extreme case and most people are not going to quad crossfire.Personally I wouldnt quad crossfire because I know its a waste.But people are doing it although few they may be.It recommends a 650 Watt on this model of HD 4870 X2 and for crossfire a 1 kilowatt PS.Just the manufacturers recommendation .Its nothing I made up .But I would definitely rather have too much PS than not enough.personally I think the Pc and P and Corsair 750 watts are the sweet spot right now for price/performance for handling single big cards or moderate SLI/Crossfire

http://www.newegg.com/Product/Product.aspx?Item=N82E16814161242

Brand HIS Hightech
Model H487X2F2GP
Interface
Interface PCI Express 2.0 x16
Chipset
Chipset Manufacturer ATI
GPU Radeon HD 4870 X2
Core clock 750MHz
Stream Processors 1600 (800 x 2) Stream Processing Units
Memory
Memory Clock 1800MHz
Memory Size 2GB
Memory Interface 512-bit (256-bit x 2)
Memory Type GDDR5
3D API
DirectX DirectX 10.1
OpenGL OpenGL 2.1
Ports
HDMI 1 via Adapter
DVI 2
TV-Out HDTV / S-Video Out
General
RAMDAC 400 MHz
Max Resolution 2560 x 1600
CrossFire Supported Yes
Cooler With Fan
Operating Systems Supported Windows Vista/XP/MCE
System Requirements 650 Watt or greater power supply with one 2x3-pin PCIe power connector and one 2x4-pin PCIe power connector is required (1K Watt with two 2x3-pin and two 2x4-pin connectors for ATI CrossFireX technology in dual mode)
Power Connector 6 pin / 8 pin
Dual-Link DVI Supported Yes
HDCP Ready Yes
Packaging
Package Contents H487X2F2GP
Driver Disk
User's Manual
HDTV Cable
Power Cable
DVI to VGA/D-sub Adapter
DVI to HDMI Adapter
CrossFire Bridge
S-Video to Composite Adapter
ScrewDriver


Home > Computer Hardware > 0_.Video Cards & Video Devices > 1_.Desktop Graphics / Video Cards > 2_.Hightech Information System Ltd. > 3_.Item#:N82E168141612424_.
 
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