ongoing 7970 crossfire problems

Sacriel

Sacriel

Sacriel

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Joined
31 Dec 2008
Posts
35
Location
Derby
Good day sirs,

Im after a little advice, I appear to get terrible performance out of my 7970s, with one 7970 I get around 60fps in ultra (multiplayer) and with two, i get upto 100fps (when facing a quiet area of the map) or 60-70 fps

after 15 minutes of playing bf3 on ultra my pc crashes and reboots, im using a coolermaster 850watt psu

I recently took the side of my case off to listen to the fans to see if i can figure out whats going on and ive noticed a distinct hissing coming from my machine, ive tried each card seperately and i still hear the same hiss - i cant tell if its my PSU or mobo, i presume two brand new 7970s dont have the same issue.

im wondering if there is a chance my psu/mobo is faulty, and causing the system to drop under heavy load instead of the idea that my 7970s (or one of them) is faulty

im out of ideas short of buying a new mobo/cpu and psu - can anyone offer any advice?

spec me a mobo/cpu/psu just incase, nothing too crazy but i want decent performance, £400 ish tops for mobo/cpu/psu
 
I've tried, but the sound is localised next to the graphics card slot, which is directly above the psu so its almost impossible to tell
 
my pc reboots when the top of the two cards (an inch apart) hits 70ish

i cant seem to make my macine crash if i benchmark both cards seperately

the PSU makes more noise the more the computer is under stress, eg. its silent when browsing, audible when playing minecraft and screetching when benchmarking heaven 3.0
 
AM Kingston HyperX Genesis 12GB (3x4GB) DDR3 PC3-12800C9 1600MHz Triple Channel (KHX1600C9D3K3/12GX)

Just got 2 M4 SSD to RAID 0 for my boot drive, currently on a gen1 ssd raid
 
nxzt phantom

120mm on the front pulling in, one on the side directly beside the two 7970s

220 blowing out the top of the case, 120 blowing out the back

even with thes side completely off, and an additional 120mm at the end of the two 7970s, so one blowing lengthways down the cards one blowing sideways directly into the two gpu fans - my machine still reboots under full load for a few minutes, even with gpu fans artificially set to 50% (with auto settings they only hit about 30% before the pc reboots)
 
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Kingston HyperX Genesis 12GB (3x4GB) DDR3 PC3-12800C9 1600MHz Triple Channel
Intel Core i7 920 D0 Stepping (SLBEJ) 2.66GHz (Nehalem) (Socket LGA1366)
Gigabyte GA-EX58-UD3R Intel X58 (Socket 1366) DDR3 Motherboard
Titan TTC-NK85TZ Fenrir CPU Cooler#
2x Gigabyte 7970
 
jamesfreddie said:
It appears to be a PSU issue.
Click to expand...

Ironically my GF gets her upgrade tomorrow including a new 850 PSU

I will pop that in my case and run the same setup again, see if the hissing and the crashing goes away

if the hissing/crashing persists I guess its time for a new mobo, ill try both my cards in her machine to stress test them

so much to do, its such a pain buying all this gear then spending weeks with your pc on its knees
 
How much power does an ssd draw? my setup has been up and down recently but the last 24 hours it has been unable to run at full load for more than 5-10 minutes, the only thing thats changed in the last 24 hours is adding a 120mm fan and a single M4

any chance my psu is screwed that the tiny bit of extra load is pushing it over the edge?
 
So i just tested with another PSU straight out of the box

with one 7970, the new psu (750w) squeeled like hell, this time i left the PSU outside of my case (on the opposite side to the graphics card

both the graphics card(or slot, impossible to tell) and PSU where squeeling and whining like mad

any ideas? what could cause both the PSU and graphics card/mobo to whine and hiss and squeel like that?

didnt dare benchmark until my pc rebooted as it sounded terrible after a few seconds of benchmarking
 
It was only running one 7970, the other was totally disconnected
my friend is bringing his rig over tomorrow, currently running 6970 crossfire, I guess i should test each 7970 in his machine 1 by 1, then in crossfire and see if he gets the whining and what not

if he does it would suggest its the cards, does that mean i need to RMA them?

can you think of any more tests I should try

many thanks for all your help
 
there is no BSOD, just a total reboot of my machine once the crossfire is running 100%

the top card seems to be higher temp, but even with the fan set to high my rig still reboots after a few minutes of full load

I hate problems like these, is one of the cards giving out, my psu giving out or my mobo giving out

takes so long to test each component on other machines
 
ok latest update

looks like the cards are fine

just ran both cards in crossfire on my friends ninja pc, played metro 2033 on full settings at 110fps for a long time, both cards were over 70 degrees (his mobo had the VERY close together, closer than mine) but they didnt crap-out for 20 minutes solid

i turned the fan settings on his MSI afterburner profile back to default and one card (top card) reached 80 degrees but the system stayed completely stable

sounds like the cards are fine, something in my system is giving out, time to buy a 850w or 1000w corsair PSU what do you reckon?
 
Skeng said:
Assuming from your first post you are playing battlefield 3. Try testing your cards on your rig using a different game. I cant use crossfire when playing battlefield 3 it causes a blue screen after a random amount of time between 30 seconds to a hour.
Click to expand...

My machine reboots after 5 minutes of BF3 or Heaven 3.0 benchmark etc
 
my performance on my 7970s has been pretty weak so I think I'm going to bite the bullet and get a new mobo/cpu psu and a corsair h70/80 cooler.

could someone spec me up? i also do 3d/2d editing (after effects etc)

£250 (ish) CPU
£250 (ish) mobo
I plan to OC the chip, so h80 or h70?
 
Intel Core i5-2500K 3.30GHz (Sandybridge) Socket LGA1155 Processor - Retail £175.99
Gigabyte Z68X-UD3H-GEN3 Intel Z68 (Socket 1155) DDR3 Motherboard £122.98
Corsair Enthusiast TX850M High Performance 850W '80 Plus Bronze' Modular Power £104.99
Corsair Hydro H80 High Performance Liquid CPU Cooler (CWCH80) £69.98

How does that sound?
 
Mr. May said:
You already have an i7 920 Do with 12gb of ram there is nothing worth upgrading to for games :confused:

If you really need an upgrade get a second had 6 core cpu for around £250 after you sell your 920

And that psu are using is awful its cutting out and restarting because its pull more load than the psu can handle and tripping much like a circuit breaker in a house to stop it form blowing up. :eek:

Also get a 'quality' 850w+ psu as you will want to overclock them beasts at some point so best to have the head room and buy the best you can afford as a good big psu will last through many builds.

also the person saying get more ram 12gb is fine on the X58 as it use's tri-channel ram ie

3x1,3x2,3x4 3gb,6gb 12gb
Click to expand...

I'm pretty unhappy with the performance of my setup at the moment, would I be able to persuade you (by means of cash) to give my rig a once over, I've never really been -that- into hardware so I just buy decent stuff but likely set it up wrong.

what say ye?
 
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