Well this isnt a suprise

tunnel · 02-16-08, 11:08 AM

I bought a new PSU Corsair HX620W to power my new 8800GTX. But now i want another 8800GTX but don't want to buy another new PSU.

Do you think a Corsair HX620W would handle 2 x 8800GTX in Sli?

Dawgdoc · 02-16-08, 12:17 PM

I LOVE Corsair PSUs. I have and love the HX620.

But that being said, no it wont

Firstly, it only has 2 X 6pin PCIe cables. You need 2 per card. Yes you can get a molex to PCIe adaptor, but the simple fact that you are only given 2 as the max option from Corsair tells me something

Also, it depends on how much you are going to OC your CPU, what CPU you currently have, how much you are going to OC your GPUs, and how many extras you have added into the system (how many hard drives, fans, etc...). If you have 1 HD its a maybe (?) but if you are running a 4 drive RAID or something its a definite no go.

Try using the Corsair PSU estimating guide HERE

When I ran the configurator with C2Q, 2 X 8800 GTX, OC cpu, OC gpu, and 2 hard drives it said 750W corsair PSU FWIW....

Good luck!

tunnel · 02-16-08, 12:36 PM

Intel Core 2 Duo CPU OC'ed to 3.2Ghz
Not going to OC GPU
3 x Fans
1 Serial ATA HDD
1 PATA HDD

Hard Drives are not in RAID configuration.

So you reckon mine would run it?

Dawgdoc · 02-16-08, 12:41 PM

Quote:

Originally Posted by tunnel

Intel Core 2 Duo CPU OC'ed to 3.2Ghz
Not going to OC GPU
3 x Fans
1 Serial ATA HDD
1 PATA HDD

Hard Drives are not in RAID configuration.

So you reckon mine would run it?

Nope.

Check the configurator but I really dont think so.

I think that the 2 X 8800 GTXs alone will overwhelm that PSU as much as I love it....

Just my opinion though.

ratbuddy · 02-16-08, 03:44 PM

It'll work just fine. Even a 520 would be enough. People have a tendency to suggest way bigger PSUs than are needed. Go to extreme.outervision.com and use the power supply calculator. Plug in your system info, and it'll tell you the power you need. IIRC, a quad core with 2 GTX's and a bunch of drives and fans draws something like 386 watts 100% loaded.

meionm · 02-16-08, 06:37 PM

SELL GTX BUY GT OR GTS

rpwinters · 02-16-08, 06:39 PM

Your best bet is to check over in the "Case and Power Supply" section. There are smoe very knowledgeable people there (Oklahomawolf and Johnnyguru)

billb · 02-16-08, 07:45 PM

From: http://www.jonnyguru.com//forums/showthread.php?t=3137

8800 GTS 640MB x 2 SLI bridge on build 2
Total: 656W DC.
Total +12V2: 13.7A
Total +12V1: 33.4A

8800 GTX 768MB x 2 SLI bridge on build 1
Total: 527W DC.
Total +12V2: 7.2A
Total +12V1: 30.2A

8800 GTX 768MB x 2 SLI bridge on build 2
Total: 715W DC.
Total +12V2: 14.3A
Total +12V1: 41.1A

Shiggity · 02-16-08, 07:47 PM

Quote:

Originally Posted by ratbuddy

It'll work just fine. Even a 520 would be enough. People have a tendency to suggest way bigger PSUs than are needed. Go to extreme.outervision.com and use the power supply calculator. Plug in your system info, and it'll tell you the power you need. IIRC, a quad core with 2 GTX's and a bunch of drives and fans draws something like 386 watts 100% loaded.

That's assuming no efficiency loss which is guarenteed on any PSU and it doesn't give you much overhead.

Better to be safe than sorry.

ratbuddy · 02-17-08, 04:45 PM

Build 1 is an Intel quad. Build 2 is a pair of FX-72's and doesn't apply to his situation. 527 watts. The HX620 would have around 100 watts headroom (at LEAST) in that system. It'll be fine.

Brolloks · 02-17-08, 10:42 PM

I run 2 x 3870X2's with my HX620 with 7 x 120 mm fans, 3 HDD, waterpump etc without any problems

tunnel · 02-25-08, 03:45 PM

Quote:

Originally Posted by Brolloks

I run 2 x 3870X2's with my HX620 with 7 x 120 mm fans, 3 HDD, waterpump etc without any problems

I hope your right bud. My second 8800GTX comes tomorrow.

Dawgdoc · 02-25-08, 04:21 PM

Quote:

Originally Posted by tunnel

I hope your right bud. My second 8800GTX comes tomorrow.

Im sure he is right since this isnt speculative information and its a rig that he is currently running.

Plus he sent me some 3M TIM tape, so in my mind he cant ever be wrong now!

Brolloks · 02-25-08, 04:31 PM

Quote:

Originally Posted by Dawgdoc

Im sure he is right since this isnt speculative information and its a rig that he is currently running.

Plus he sent me some 3M TIM tape, so in my mind he cant ever be wrong now!

Thanks for the vote of confidence man

Quote:

Originally Posted by tunnel

I hope your right bud. My second 8800GTX comes tomorrow.

Unless you get a GTX for $250 or less...why on earth would you buy another with the GTS/GT 512 out there?

Dawgdoc · 02-25-08, 05:58 PM

Quote:

Originally Posted by Brolloks

Unless you get a GTX for $250 or less...why on earth would you buy another with the GTS/GT 512 out there?

I couldnt agree more but hey.....dif strokes for dif folks.

I guess he allready had the 1st GTX and really really really wanted to get an SLI setup. Although I personally would have sold the first GTX since they are still holding value SOMEWHAT acceptably, and then bought 2X GTS 512s or wait for the new 9800 GTX which should be released pretty soon too.

tunnel · 02-26-08, 03:03 AM

Quote:

Originally Posted by Brolloks

Thanks for the vote of confidence man

Unless you get a GTX for $250 or less...why on earth would you buy another with the GTS/GT 512 out there?

2 x 8800GTX in SLi Vs 2 x 8800GTS in SLi.

Hmmm i think i know which one id rather have if i could afford both options.

ChinStrap · 02-26-08, 07:39 AM

Quote:

Originally Posted by tunnel

2 x 8800GTX in SLi Vs 2 x 8800GTS in SLi.

Hmmm i think i know which one id rather have if i could afford both options.

IMO

8800GTX SLi > 8800GTS SLI (640mb)
8800GTS SLI (512mb) > 8800GTX SLI

the only reason i say this, is overclocking potential. *most* GTX SLi maxes out on the core side around 650MHz on air. while the g92 chips can run a much faster core frequency on AIR cooling. my g92 GTS SLi can run 24/7 @ 800core/1150mem. and i can bench it all the way up to 826MHz core - NO GTX can run 800 core w/o a vmod.

TheCheat · 02-26-08, 07:52 AM

Okay, just a quick question to the OP:

What monitor are you running this SLI setup on?

aaronjb · 02-26-08, 09:25 AM

A 620W Corsair can handle that setup (and a bit more) without a problem.

http://www.jonnyguru.com/modules.php...=Story&reid=21

High-wattage PSU's have very little practical application.

tunnel · 02-26-08, 09:49 AM

Quote:

Originally Posted by TheCheat

Okay, just a quick question to the OP:

What monitor are you running this SLI setup on?

Depends really. When i can be bothered i will run it on me 28 inch HDTV.

If not that then on my 19 inch.

02-16-08, 11:08 AM	Thread Starter #1
tunnel Member Join Date: Feb 2005 Location: Newcastle	Well this isnt a suprise I bought a new PSU Corsair HX620W to power my new 8800GTX. But now i want another 8800GTX but don't want to buy another new PSU. Do you think a Corsair HX620W would handle 2 x 8800GTX in Sli? __________________ Gaming Rig \| E6600 @ 3.21Ghz \| eVGA 680i-SLi \| 2 ASUS 8800GTX SLi \| 2 x WD 250GB RAID 0 \| 4GB Corsair - TWINXMS 800Mhz \| Media Server \| D-Link DNS 323 \| 2 x WD 1TB RAID 1 \|
	QUOTE Thanks

02-16-08, 12:17 PM	#2
Dawgdoc Member Join Date: Feb 2007	I LOVE Corsair PSUs. I have and love the HX620. But that being said, no it wont Firstly, it only has 2 X 6pin PCIe cables. You need 2 per card. Yes you can get a molex to PCIe adaptor, but the simple fact that you are only given 2 as the max option from Corsair tells me something Also, it depends on how much you are going to OC your CPU, what CPU you currently have, how much you are going to OC your GPUs, and how many extras you have added into the system (how many hard drives, fans, etc...). If you have 1 HD its a maybe (?) but if you are running a 4 drive RAID or something its a definite no go. Try using the Corsair PSU estimating guide HERE When I ran the configurator with C2Q, 2 X 8800 GTX, OC cpu, OC gpu, and 2 hard drives it said 750W corsair PSU FWIW.... Good luck! __________________ Ross: "Never miss an opportunity to beat on someone else's hardware using their LN2"
	QUOTE Thanks

02-16-08, 12:36 PM	Thread Starter #3
tunnel Member Join Date: Feb 2005 Location: Newcastle	Intel Core 2 Duo CPU OC'ed to 3.2Ghz Not going to OC GPU 3 x Fans 1 Serial ATA HDD 1 PATA HDD Hard Drives are not in RAID configuration. So you reckon mine would run it? __________________ Gaming Rig \| E6600 @ 3.21Ghz \| eVGA 680i-SLi \| 2 ASUS 8800GTX SLi \| 2 x WD 250GB RAID 0 \| 4GB Corsair - TWINXMS 800Mhz \| Media Server \| D-Link DNS 323 \| 2 x WD 1TB RAID 1 \|
	QUOTE Thanks

02-16-08, 03:44 PM	#5
ratbuddy Member Join Date: Aug 2007 Location: Hartford, CT	It'll work just fine. Even a 520 would be enough. People have a tendency to suggest way bigger PSUs than are needed. Go to extreme.outervision.com and use the power supply calculator. Plug in your system info, and it'll tell you the power you need. IIRC, a quad core with 2 GTX's and a bunch of drives and fans draws something like 386 watts 100% loaded. __________________ HTPC - 2500k - 212+ - GA-Z68MX-UD2H-B3 - 2x4GB G.Skill DDR3-1600 - Vertex 2 90GB, Spinpoint F3 1TB w/M4 64GB ISRT Cache - Gigabyte GTX 460 1GB SLI - Silverstone LC10B-E - Corsair TX750W ----- Main - X3 450 - ASRock A790GMH/128M 790GX - 2x2GB G.Skill 4-4-4-12 - 2xWD Green 1TB - Silverstone TJ08 - Corsair CX400W Nothin' up my sleeve..
	QUOTE Thanks

02-16-08, 06:37 PM	#6
meionm Member Join Date: Mar 2004	SELL GTX BUY GT OR GTS
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02-16-08, 06:39 PM	#7
rpwinters Member Join Date: Jan 2005 Location: Hanover, Md.	Your best bet is to check over in the "Case and Power Supply" section. There are smoe very knowledgeable people there (Oklahomawolf and Johnnyguru) __________________ #1: X2 6400+ BE, Gigabyte GA-M61P-S3, 4 GB Corsair TWINX-6400C5, Ultima-90 W/ 92mm Panaflo M-1A, XfX 8800 GTS 512, HT Omega Striker 7.1, Corsair 620HX, CM-690, Dell 2209WA #2: XP-M 2400 45W (12X200 @ 1.85V), Shuttle AN35N-Ultra, 2 Gb PQI Turbo, SI-97A W/ 92mm Delta Tri-Blade LS, XfX 6800GT AGP, Creative Audigy2 Value, Fortron 530W, Antec Super Lanboy,Samsung 226BW HEAT
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02-16-08, 07:45 PM	#8
billb Member Join Date: Mar 2005	From: http://www.jonnyguru.com//forums/showthread.php?t=3137 8800 GTS 640MB x 2 SLI bridge on build 2 Total: 656W DC. Total +12V2: 13.7A Total +12V1: 33.4A 8800 GTX 768MB x 2 SLI bridge on build 1 Total: 527W DC. Total +12V2: 7.2A Total +12V1: 30.2A 8800 GTX 768MB x 2 SLI bridge on build 2 Total: 715W DC. Total +12V2: 14.3A Total +12V1: 41.1A __________________ AMD FX6300, ASUS M5A99X EVO R2.0, Samsung 840 Pro, Seagate 1 TB, Asus GTS450, Samsung N915 (two), PCP&C 1kw
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02-17-08, 04:45 PM	#10
ratbuddy Member Join Date: Aug 2007 Location: Hartford, CT	Build 1 is an Intel quad. Build 2 is a pair of FX-72's and doesn't apply to his situation. 527 watts. The HX620 would have around 100 watts headroom (at LEAST) in that system. It'll be fine. __________________ HTPC - 2500k - 212+ - GA-Z68MX-UD2H-B3 - 2x4GB G.Skill DDR3-1600 - Vertex 2 90GB, Spinpoint F3 1TB w/M4 64GB ISRT Cache - Gigabyte GTX 460 1GB SLI - Silverstone LC10B-E - Corsair TX750W ----- Main - X3 450 - ASRock A790GMH/128M 790GX - 2x2GB G.Skill 4-4-4-12 - 2xWD Green 1TB - Silverstone TJ08 - Corsair CX400W Nothin' up my sleeve..
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02-17-08, 10:42 PM	#11
Brolloks Benching Senior on Siesta Premium Member #8 Join Date: Dec 2006 Location: Land of Long Horns	I run 2 x 3870X2's with my HX620 with 7 x 120 mm fans, 3 HDD, waterpump etc without any problems __________________ Should I get a Quad- or Dual-Core? - How about joining us in the Benching Lounge for some secrets - Want to bench sub-zero...take a look. Heatware 280-0-0 HWBOT Profile
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02-26-08, 07:52 AM	#18
TheCheat Member Join Date: Jun 2004 Location: Marquette, MI	Okay, just a quick question to the OP: What monitor are you running this SLI setup on? __________________ Corsair 600T - i5 2500 - Asus Maximus V Gene - 8GB Ram - EVGA 560 Ti 448cores - 240GB Mushkin SSD - 1 TB WD HD - Seasonic X750 GOLD - Blu-ray - Dell 2407FPW Dell XPS 16 - i7 720 - 8GB Ram - AMD 5730 1GB - WD 500GB HD - Blu-ray
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02-26-08, 09:25 AM	#19
aaronjb Member Join Date: Feb 2006 Location: Lobsterland	A 620W Corsair can handle that setup (and a bit more) without a problem. http://www.jonnyguru.com/modules.php...=Story&reid=21 High-wattage PSU's have very little practical application. __________________ I drink your milkshake. I DRINK IT UP! heatware
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