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Old 10-19-08   #1 (permalink)
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Default HD 4850 Crossfire PSU
Soon I will be getting a 4850 and I understand that my current PSU will be able to handle the power requirements. However, I am interested in getting a new Crossfire mobo (DFI LP DK P45-T2RS PLUS) and an additional 4850 towards Christmas when prices go down.

Question: Will a 800 Watt PSU be good enough to run my sig rig with a HD4850 Crossfire setup?

I am interested in getting the BFG ES 800 Watt PSU
http://www.newegg.com/Product/Produc...ies-_-17702007
based on this review:
http://www.guru3d.com/article/bfg-es...t-psu-review/9

In addition take a look at a review for the DFI LP DK P45-T2RS PLUS
http://www.madshrimps.be/?action=get...14&articID=873


Take a look at the benchmarks of a 4850 Crossfire setup here
http://www.hardwarecanucks.com/forum...review-16.html
and here
http://www.hardwarecanucks.com/forum...-review-9.html

The performance is on par with 4870x2 for a much lower price.

System: My $xxx System
CPU
Q6600 G0 [VID:1.2625] 3.6 Ghz 1600 Mhz FSB		 Motherboard
DFI LANPARTY DK P35-T2RS		 Memory
G.SKILL 4GB DDR2 1000 Cas 5 F2-8000CL5D-4GBPQ 		Graphics Card
EVGA GTX 260 Core 216 896MB OC 725/1563/2400
Hard Drive
OCZ Vertex 30GB SSD, WD6400AAKS + 320gbx2 (1.2 TB)		 Sound Card
HD 8-channel stock Logitech Z340 2.1 speakers		 Power Supply
CORSAIR 750W Ultra-quiet 750TX +12V1@60A		 Case
Antec 900 w/ simple mod. 7 fans x1 200mm x6 120mm
CPU cooling
Thermalright Ultra-120 x1 120mm 114.7 CFM 2705 RPM		 OS
Win XP Pro sp3, Win 7 Ultimate RC1 build 7100 soon		 Monitor
Dell Widescreen UltraSharp 2405FPW 24in LCD
Last edited by Nolander : 10-19-08 at 02:25 PM
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Old 10-19-08   #2 (permalink)
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The PSU I have could handle your rig w/ a pair of 4850's. It's also a recommended PSU by ATI for teh 4870X2.

It's only downfall is that it's cables aren't "pretty".

EDIT: Newegg has a great deal on the EA650 right now too. It's regular price is $100. I got mine for $70 shipped and now they're at $65 shipped. The Corsair's are nice, but $65 you can't really beat it right now. Best bang for the buck at this price.

Here's a review from a trusted PSU review site.

http://www.jonnyguru.com/modules.php...Story&reid=110

He gave it a 9, so I'd say it's a good PSU.
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Old 10-19-08   #3 (permalink)
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This power supply is much better and cheaper.
http://www.newegg.com/Product/Produc...82E16817139006
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Old 10-19-08   #4 (permalink)
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Those links are only for crysis. im not sure if driver updates have changed those numbers but in 90% of other games 4870x2 will produce higher FPS. there is no way a 4850 crossfire will match the 4870x2 as it is simply 4870 cross fired onto a single card. if you are interested in the 4850's i believe ATI will be releasing the 4850x2 soon but im not sure on the pricing.
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Old 10-19-08   #5 (permalink)
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Quote:
Originally Posted by FallenFaux View Post
This power supply is much better and cheaper.
http://www.newegg.com/Product/Produc...82E16817139006
Well after MIR they are both $99.99

System: My $xxx System
CPU
Q6600 G0 [VID:1.2625] 3.6 Ghz 1600 Mhz FSB		 Motherboard
DFI LANPARTY DK P35-T2RS		 Memory
G.SKILL 4GB DDR2 1000 Cas 5 F2-8000CL5D-4GBPQ 		Graphics Card
EVGA GTX 260 Core 216 896MB OC 725/1563/2400
Hard Drive
OCZ Vertex 30GB SSD, WD6400AAKS + 320gbx2 (1.2 TB)		 Sound Card
HD 8-channel stock Logitech Z340 2.1 speakers		 Power Supply
CORSAIR 750W Ultra-quiet 750TX +12V1@60A		 Case
Antec 900 w/ simple mod. 7 fans x1 200mm x6 120mm
CPU cooling
Thermalright Ultra-120 x1 120mm 114.7 CFM 2705 RPM		 OS
Win XP Pro sp3, Win 7 Ultimate RC1 build 7100 soon		 Monitor
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Old 10-19-08   #6 (permalink)
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The Corsair 750TX would be suitable.

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Old 10-19-08   #7 (permalink)
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Quote:
Originally Posted by Auld View Post
Those links are only for crysis. im not sure if driver updates have changed those numbers but in 90% of other games 4870x2 will produce higher FPS. there is no way a 4850 crossfire will match the 4870x2 as it is simply 4870 cross fired onto a single card. if you are interested in the 4850's i believe ATI will be releasing the 4850x2 soon but im not sure on the pricing.
I am looking at Crysis simply because in all other games the 4850/4870 Crossfire is overkill with over 90 fps (1600x1200) with the exception of World of Conflict which I don't play. In addition, the refresh rate for LCD monitors with anything above 1280x1024 is 60 Hertz and it would be pretty difficult to see a major difference at such high fps. Until they come out with mainstream LCD Monitors with those high 120 Hertz refresh rates I think the 4850/4870 Crossfire setups would suffice for any gamer through the next 2 years. Finally I have not heard ANYTHING about the 4850x2 and by the time it does come out 2 4850's will be closer to $200 (currently $270 after MIR) price range, which obviously is much better than the proposed $399.

http://www.guru3d.com/news/4850-x2-radeon/

System: My $xxx System
CPU
Q6600 G0 [VID:1.2625] 3.6 Ghz 1600 Mhz FSB		 Motherboard
DFI LANPARTY DK P35-T2RS		 Memory
G.SKILL 4GB DDR2 1000 Cas 5 F2-8000CL5D-4GBPQ 		Graphics Card
EVGA GTX 260 Core 216 896MB OC 725/1563/2400
Hard Drive
OCZ Vertex 30GB SSD, WD6400AAKS + 320gbx2 (1.2 TB)		 Sound Card
HD 8-channel stock Logitech Z340 2.1 speakers		 Power Supply
CORSAIR 750W Ultra-quiet 750TX +12V1@60A		 Case
Antec 900 w/ simple mod. 7 fans x1 200mm x6 120mm
CPU cooling
Thermalright Ultra-120 x1 120mm 114.7 CFM 2705 RPM		 OS
Win XP Pro sp3, Win 7 Ultimate RC1 build 7100 soon		 Monitor
Dell Widescreen UltraSharp 2405FPW 24in LCD
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Old 10-19-08   #8 (permalink)
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According to this review:
http://enthusiast.hardocp.com/articl...50aHVzaWFzdA==

You wouldn't need that strong PSU to handle 4850 CF.

System: {Zhaydor}
CPU
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2x750GB Samsung Spinpoint F1 [RAID-0]		 Sound Card
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Old 10-19-08   #9 (permalink)
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Quote:
Originally Posted by pez View Post
The PSU I have could handle your rig w/ a pair of 4850's. It's also a recommended PSU by ATI for teh 4870X2.

It's only downfall is that it's cables aren't "pretty".

EDIT: Newegg has a great deal on the EA650 right now too. It's regular price is $100. I got mine for $70 shipped and now they're at $65 shipped. The Corsair's are nice, but $65 you can't really beat it right now. Best bang for the buck at this price.

Here's a review from a trusted PSU review site.

http://www.jonnyguru.com/modules.php...Story&reid=110

He gave it a 9, so I'd say it's a good PSU.
Thanks you may have just saved me $75 bones
+REP

System: My $xxx System
CPU
Q6600 G0 [VID:1.2625] 3.6 Ghz 1600 Mhz FSB		 Motherboard
DFI LANPARTY DK P35-T2RS		 Memory
G.SKILL 4GB DDR2 1000 Cas 5 F2-8000CL5D-4GBPQ 		Graphics Card
EVGA GTX 260 Core 216 896MB OC 725/1563/2400
Hard Drive
OCZ Vertex 30GB SSD, WD6400AAKS + 320gbx2 (1.2 TB)		 Sound Card
HD 8-channel stock Logitech Z340 2.1 speakers		 Power Supply
CORSAIR 750W Ultra-quiet 750TX +12V1@60A		 Case
Antec 900 w/ simple mod. 7 fans x1 200mm x6 120mm
CPU cooling
Thermalright Ultra-120 x1 120mm 114.7 CFM 2705 RPM		 OS
Win XP Pro sp3, Win 7 Ultimate RC1 build 7100 soon		 Monitor
Dell Widescreen UltraSharp 2405FPW 24in LCD
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Old 10-19-08   #10 (permalink)
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oh yeah the corsair is REALLY nice and can not be beat at that price PERIOD

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