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pkirby11
11-15-07, 08:24 PM
Okay guys let me ask you this but first let me say thanks for any help in advance. I just bought two 8800GT's, one is an XFX the other an EVGA. Now one was for my computer and it was the EVGA and works flawlessly and the other was for an upgrade in my brothers computer.

My PC's Stats
8800GT
Q6600
750 Watt PSU
Asus P5B Deluxe Mobo

Now as I siad the card works great but here is the problem, the one for my bros computer won't display video. The computer turns on and POST's but the video card never iniates. The fan speed stays at max and I get no signal but I know it's booting because I can shut down Vista with the powe button pushed once. Now I tried both cards in his system and they will display images at times but 95% of the time no image and then I tried both my computer and they work fine. I tried an x2600 in my bros computer and it works fine too.

His computer
C2D 4400
Asus P5B SE
470 Watt PSU (PC P&C)
8800GT XFX 640Mhx clock

Now the only difference is PSU wattage and CPU, the mobo's I would think would be the same since they use the same chipset. How ever, everything I've read says the 8800GT should run fine on a 450 watt PSU. So other than that I can only assume it's PCIe 2.0 incompatiabilities but I'm not sure. Any suggestions guys? Thanks!

methimpikehoses
11-15-07, 08:28 PM
Make sure nothing is OCd on his PC first. Then get the machine to boot with the card. Then OC.

That same thing happened with my GTX sometimes when my CPU OC was borked.

pkirby11
11-15-07, 08:33 PM
Make sure nothing is OCd on his PC first. Then get the machine to boot with the card. Then OC.

That same thing happened with my GTX sometimes when my CPU OC was borked.


Sorry forgot to mention, I've not OC anything on his computer. It's all stock factory speeds and the only way I can get it to post is using the 2600XT.

SLippe
11-15-07, 08:34 PM
I would think that 470 would be fine, but of course it all depends on what else you have in the case, like how many CD/DVD drives, etc.

I'm curious about the 8800GT and the PCIe 2.0 situation myself as I started another thread on this last night where I asked if I would have a problem running an 8800GT on my current mobo, which is only PCIe 1.0. Seems like everyone thought they are backwards compatible, but I'm not 100% convinced, yet. Maybe jAkUp will chime in soon.

It's weird that they both worked in your system, but not his. Besides the usual checks like; Proper PCIe slot, proper DVI slot, proper BIOS setting for main video out slot, etc., then I have no idea at this point, except a PSU problem, but that seems unlikely, however still possible.

Edit: Did you uninstall the ATI drivers from his PC?

pkirby11
11-15-07, 08:44 PM
I would think that 470 would be fine, but of course it all depends on what else you have in the case, like how many CD/DVD drives, etc.

I'm curious about the 8800GT and the PCIe 2.0 situation myself as I started another thread on this last night where I asked if I would have a problem running an 8800GT on my current mobo, which is only PCIe 1.0. Seems like everyone thought they are backwards compatible, but I'm not 100% convinced, yet. Maybe jAkUp will chime in soon.

It's weird that they both worked in your system, but not his. Besides the usual checks like; Proper PCIe slot, proper DVI slot, proper BIOS setting for main video out slot, etc., then I have no idea at this point, except a PSU problem, but that seems unlikely, however still possible.

Edit: Did you uninstall the ATI drivers from his PC?


Let me give you the full run down on his system. He's a casual gamer not looking to spen much cash so I'm giving him my hand me down C2D. :) So I convinced to buy an 8800GT over the 8600 his friend tried to get him to buy. :)

So he mainly plays WOW wants to play Hellgate and maybe The Witcher. He's coming from a 6800. ;) So he has minimum power draw.

C2D 4400
Asus P5B SE
2 GB DDR2-800
8800GT
Creative Audigy 2
1 SATA HDD 250GB
1 SATA CD-ROM

Few case fans and that about does it. I tried a 500 Watt Antec first but didn't like it so I got the PC P&C because I like them better and think there more than stable. I would think 470 Watt would be enough and the fact that there is no OC and the card works fine for me it's the PCI 2.0 crap. Which sucks and pisses me off because they both use the P965 chipset.

Oh and I never installed the ATI drivers, just wanted to see if I could get it to post and give me an image. Also, when I first set it up it did not work. Shut it down and reseated things, turned it on and it work for a while. Then it stopped, then it worked and now it won't work at all. Either card and it's driving me nuts and pissing me off! :D

SLippe
11-15-07, 08:54 PM
Let me give you the full run down on his system. He's a casual gamer not looking to spen much cash so I'm giving him my hand me down C2D. :) So I convinced to buy an 8800GT over the 8600 his friend tried to get him to buy. :)

So he mainly plays WOW wants to play Hellgate and maybe The Witcher. He's coming from a 6800. ;) So he has minimum power draw.

C2D 4400
Asus P5B SE
2 GB DDR2-800
8800GT
Creative Audigy 2
1 SATA HDD 250GB
1 SATA CD-ROM

Few case fans and that about does it. I tried a 500 Watt Antec first but didn't like it so I got the PC P&C because I like them better and think there more than stable. I would think 470 Watt would be enough and the fact that there is no OC and the card works fine for me it's the PCI 2.0 crap. Which sucks and pisses me off because they both use the P965 chipset.

Oh and I never installed the ATI drivers, just wanted to see if I could get it to post and give me an image. Also, when I first set it up it did not work. Shut it down and reseated things, turned it on and it work for a while. Then it stopped, then it worked and now it won't work at all. Either card and it's driving me nuts and pissing me off! :D
Could be a motherboard BIOS thing then. I doubt it's the PSU. Here's my old rig's specs (and I never had a problem with it);

• eVGA NForce4 SLI Edition NF41 (BIOS 6.0 3/30/06)
• AMD 64 Dual-Core Opteron 170 Denmark @ 2.6GHz (260x10) On Stock 1.35v
• eVGA 8800GTS KO 640MB ACS3 @ 648/1566/1890 (BIOS 60.80.0A.00.07 12/30/06)
• 2GB (4x512MB) Corsair Value Select DDR400 (2.5-3-3-6-2T) On 173 Divider
• 2x 250GB WD Caviar SE16 SATA2 HDD (WDC WD2500KS-00MJB0)
• Creative Sound Blaster Audigy 2 ZS Platinum Pro
• Westinghouse LCM-22w3 22" @ 1680x1050 60Hz 5ms
• Windows XP Professional (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_gdr.070227-2254)
• DirectX 9.0c (4.09.0000.0904) August 2007 SDK
• Forceware 163.71 - September 28, 2007 WHQL
• 3DMark06 Score: 9175 (http://service.futuremark.com/compare?3dm06=3246594)

Oops! I just realized my PSU isn't on there. I ran that on an Antec NeoHE 500W. Plus a DVD-RW DL drive, DVD-Rom drive, four 92mm fans, one 80mm fan, one 120mm fan and two 4" red cold-cathode lights.

pkirby11
11-15-07, 09:39 PM
Yeah I don't think it's a PSU issue, I also flashed the BIOS to the latest version that they just released the other day and still nothing. I can only assume it's the PCI 2.0 crap. Jakup maybe you have an answer? :)

K-1
11-15-07, 10:06 PM
I'm using an 8800GT in a PCIe 1.0a mobo with no problems, so unless there are people out there with your specific mobo having the same problem, I don't believe the PCIe version is causing the problem.

pkirby11
11-15-07, 10:13 PM
Well after doing a search, seems that it's not all 1.0 boards but random boards in general. Seems other have had this problem with one board or another and after switching it was fixed. So I guess I try replacing the board.

pkirby11
11-16-07, 07:58 PM
Just a quick follow up, for those interested if you're looking at getting an 8800GT be ready to play the musical motherboard game. Asus P5B-SE P965 chipset motherboard that just came out did not run the 8800GT. The system would boot but the fan on the 8800GT never idled down and no video signal. Tried everything from updating the BIOS to different PSU's and nothing worked. Just bought a P5B plain board with a P965 chipset and it worked flawlessly. Seems to be a problem depending on the BIOS with 1.0a and 1.1 boards so good luck and just wanted to give you guys the heads up! By the way, the P5B SE worked fine because I tried a x2600XT in it and it ran great so it's definately the motherboard, BIOS and PCIe 2.0 spec, full compatability my ass!

So right now:
P5B - Works
P5B Deluxe - Works
P5B-SE - No workie

shabby
11-16-07, 08:35 PM
P5B Deluxe - Works

Whew, good to know :)