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7950 Crossfire vs 680 SLI at 5760*1080 (Eyefinity/Surround)

As this kind of turned into a build log and people waiting for a "big but" for 5 pages before I got my results out I will post here:

I think I've decided to get a second 7950 but run one monitor still. Gone for HIS IceQ to help with CF temps.

Overkill? Definitely but I don't care it's my money :D. Also I can run them around 1100/1150 and take temps out the equation instead of 1200/1250.
 
Rusty0611 said:
As this kind of turned into a build log and people waiting for a "big but" for 5 pages before I got my results out I will post here:

I think I've decided to get a second 7950 but run one monitor still. Gone for HIS IceQ to help with CF temps.

Overkill? Definitely but I don't care it's my money :D. Also I can run them around 1100/1150 and take temps out the equation instead of 1200/1250.
Click to expand...

Can't blame you :)
 
Nuclear Fusion said:
What happened to your tri-sli 680's?
Click to expand...

Shafted by EVGA.
One of my Classifieds had to be RMA'd and the one I got back
didn't have the Evbot on and prevented me running my OC
that I had on all 3.

So returned that and got the matrix as I wanted to try AMD
for a while as read its better for surround/eyefinity.

Still got my other two 680's but once I sort this eyefinity out,
fancy trying crossfire.
Then I'll test fully and decide which I'm keeping.
 
whyscotty said:
Shafted by EVGA.
One of my Classifieds had to be RMA'd and the one I got back
didn't have the Evbot on and prevented me running my OC
that I had on all 3.

So returned that and got the matrix as I wanted to try AMD
for a while as read its better for surround/eyefinity.

Still got my other two 680's but once I sort this eyefinity out,
fancy trying crossfire.
Then I'll test fully and decide which I'm keeping.
Click to expand...

Stuff that, you want like for like back off them....

You buy a BMW 320i, it blows up, you send it back under warranty and they send you a 318i?

I'd go nuts and send it straight back to them with a poisonous letter.
 
humbug said:
Stuff that, you want like for like back off them....

You buy a BMW 320i, it blows up, you send it back under warranty and they send you a 318i?

I'd go nuts and send it straight back to them with a poisonous letter.
Click to expand...

Tried 3 times with EVGA Europe no joy same response.
Any and all replacement cards will NOT have Evbot fitted.

Yet on their forums the product manager(Jacob)
stated some where held back for RMA purposes.

So it looks like if your State side your replacement will have Evbot
the rest of us get what where given.

On the bright side though it may mean the cards I do still
have will have a high resale as there are ppl who what
the Classifieds with Evbot.
 
Rusty0611 said:
As this kind of turned into a build log and people waiting for a "big but" for 5 pages before I got my results out I will post here:

I think I've decided to get a second 7950 but run one monitor still. Gone for HIS IceQ to help with CF temps.

Overkill? Definitely but I don't care it's my money :D. Also I can run them around 1100/1150 and take temps out the equation instead of 1200/1250.
Click to expand...

Sorry for any part I played in de-railing the thread.
Seeing your results I'm very tempted to get a couple AMD cards and just run extended desktop and game on a single monitor until the crossfire/Eyefinity/RIVE issues are sorted out (unless I managed to escape them).
Tempted to get 7970s though, largely for the reason you say about better temps due to the air being exhausted.
Really appreciate you doing this thread.
 
Update: I mentioned earlier in the thread my metro results were weird compared to Rusty's.

I found out why. There's an obscure setting in some metro config files that causes a lighting glitch. You can see it during the first level with red squares appearing on the screen.

In each of the user.cfg files, you need to change the line
r_gi 1
to
r_gi 0

These files are found in the following directories:
C:\Users\ YOURNAME\AppData\Local\4A Games\Metro 2033\
[steam folder]\Steamaps\common\Metro 2033\
[steam folder]\userdata\[some number]\43310\remote\

They don't make it easy.
Now my frame rates are much more reasonable, and CPU usage has dropped significantly.
 
MeMeMeMe said:
Update: I mentioned earlier in the thread my metro results were weird compared to Rusty's.

I found out why. There's an obscure setting in some metro config files that causes a lighting glitch. You can see it during the first level with red squares appearing on the screen.

In each of the user.cfg files, you need to change the line
r_gi 1
to
r_gi 0

These files are found in the following directories:
C:\Users\ YOURNAME\AppData\Local\4A Games\Metro 2033\
[steam folder]\Steamaps\common\Metro 2033\
[steam folder]\userdata\[some number]\43310\remote\

They don't make it easy.
Now my frame rates are much more reasonable, and CPU usage has dropped significantly.
Click to expand...


Good info. :)
 
I installed my second 7950 today and was greeted by temps of 61c while running the same overclock as the MSI Twin Frozr which was running around 75c.

So the "good" MSI is going back as well. An obvious dodgy batch of cooling on these MSI ones.

Now on my IceQ HIS card I think I might have dodgy VRAM! When will it end?!

The MSI thing can be written off as just one of those things but I might genuinely have a failed card now which after the fiasco of the heat on those MSI cards would be irritating timing.

I shall be claiming the postage back on the MSI cards for obvious reasons.
 
Rusty0611 said:
I installed my second 7950 today and was greeted by temps of 61c while running the same overclock as the MSI Twin Frozr which was running around 75c.

So the "good" MSI is going back as well. An obvious dodgy batch of cooling on these MSI ones.

Now on my IceQ HIS card I think I might have dodgy VRAM! When will it end?!

The MSI thing can be written off as just one of those things but I might genuinely have a failed card now which after the fiasco of the heat on those MSI cards would be irritating timing.

I shall be claiming the postage back on the MSI cards for obvious reasons.
Click to expand...

Your not having much luck. Maybe you should have stayed with Nvidia.. :D

Both my XFX cards idle between 30-35.c
 
psychodil said:
I thought one of your MSI cards had good temps?:confused:

Always worth reapplying TIM with MSI cards, they don't mind you removing the cooler.

What's the matter with the vram?
Click to expand...

I thought it was good until I got the IceQ in..... It wasn't good at all. It was 15c worse :eek: which means the other one which is going back is 35c worse :D.

Now taking at face value the claims on the box.... MSI is 17c cooler than reference and HIS 12c cooler than reference that means that one card is 20c off where it should be and the other is 40c off where it should be.

Well the screen so far twice has bugged out gone blue once and brown/yellow stripes the other. It's possible the VRAM isn't as good quality as the MSI and can't take the high clocks. I've downclocked the memory to 1550 and it's OK so far.

MOOGLEYS said:
Your not having much luck. Maybe you should have stayed with Nvidia.. :D

Both my XFX cards idle between 30-35.c
Click to expand...

Ha! I was going to joke that but thought humbug might fly off the handle and derail my thread :D.

On a half serious note I am having serious regrets on selling the beast. Kind of wish I kept him. I didn't need the money for the sell up and if I was going again I would have kept it. Not due to problems - I'm pragmatic about these things - but just for ease of not having to swap and mess around.
 
Last edited:
Didn't want to hear about these problems, I'm about this close |<------>| to pulling the trigger on a couple of 7970s based on this thread...

Was already worried about coil whine...

And Crossfire+Eyefinity+X79 mobo issues...
 
GoogalyMoogaly said:
Didn't want to hear about these problems, I'm about this close |<------>| to pulling the trigger on a couple of 7970s based on this thread...

Was already worried about coil whine...

And Crossfire+Eyefinity+X79 mobo issues...
Click to expand...

I would get 7950's and save the money. I doubt you would notice the difference between them.
 
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