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7950 Crossfire Usage issues..

No idea but it's something on the card as all my other GPU's run ok. I think it could be fixed with a bios flash if there is one that works but I'm not willing to try that and void the warranty.

I would rather send it back under the returns and get something without a boost bios if there is anything now.

I have saved the His bios from the card and I'm going to try and flash it to my 7970. I have no idea if this will work orif it is even possible tbh.
 
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A OcUK staff member informed the forum when the 69's surfaced that bios flashing did not void the warranty-if you are unsure though you can ask CS.

You can re-lock the original bios back on as well with no one the wiser.

I also doubt that techs take the time to read both bios either, but that's personal opinion.

All the above however shouldn't have to be done when you just want to plug in cards and away you go, but for mine to work and yours not to, there is a problem somewhere.

LtMatt said:
What is Moogleys using that you're not?
Click to expand...

I don't know, maybe the psu doesn't like the cards, an unstable oc on the cpu, a faulty gpu, something else?

I'm on W7.

Ulps needs to be disabled for oc'ing the 79's, it might appear to be disabled, but sometimes it doesn't and resets automatically when you re open CCC.

Gpu-z will inform you if it has as both gpus should idle@300MHz when ulps is disabled.

I posted earlier what my His Itool settings are too.
 
I think I have fixed it. This is my usage now no more jumping around and a nice constant core speed. Will give it a good testing and see how it goes before getting to excited. :)

Untitled-36_zps2e37e06a.jpg
 
All I have done is installed the latest beta of afterburner and forced a constant voltage. So far for some reason it is not boosting and just staying constant.
 
MOOGLEYS said:
Running 1.2v and 1200/1600 it is now perfectly stable ? I'm not really sure why but the card is not boosting anymore...
Click to expand...

Forcing constant voltage disables boost? It does on mine anyway :) That's how I am currently working around the 1.25v boost issue, until I can find a HIS 7950 IceQ none boost version of the BIOS.

BTW, good clocks!

Can hit 1175 on the core no problem, but one of my cards has dodgy ram and won't go past 1350, the other is good for 1500.
 
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I tried this before and nothing happend. It seems to work with the beta afterburner. Strangely the voltage and clocks are dropping when in idle.
 
I will give it a good testing later and make sure all is OK. Just seems a bit weird that it is not boosting and even with a forced voltage it is still dropping down at idle.
 
MOOGLEYS said:
I will give it a good testing later and make sure all is OK. Just seems a bit weird that it is not boosting and even with a forced voltage it is still dropping down at idle.
Click to expand...

The boosting isn't the same as nVidia's. It's just a preset boost to 950mhz rather than a plus over the clock speed you set.
 
MOOGLEYS said:
I tried this before and nothing happend. It seems to work with the beta afterburner. Strangely the voltage and clocks are dropping when in idle.
Click to expand...

It's forcing constant voltage in each clock state:

Clock State 0
Core Clk: 800.00 MHz
Memory Clk: 1250.00 MHz
Flags: Boot
Clock State 1
Core Clk: 800.00 MHz
Memory Clk: 1250.00 MHz
Flags: Optimal Perf
Clock State 2
Core Clk: 800.00 MHz
Memory Clk: 1250.00 MHz
Flags: UVD
Clock State 3
Core Clk: 300.00 MHz
Memory Clk: 150.00 MHz

(Different bios but you get the idea)

Sorry moogley, I only mentioned forcing a constant voltage but I thought I said to try using Trixx as well, but that was in another thread, could have saved you a lot of time.

:)
 
I'm not as impressed with AB as I used to be, a lot of it is hit and miss now, it's a poor show when it doesn't actually apply core voltage on it's own TFIII, although it stated higher voltage-Gpu-z showed that it hadn't budged.

Where as core voltage applied via Trixx(Gpu-z reported higher voltage) and the higher clocks given confirmed applied voltage through Trixx.
 
tommybhoy said:
I'm not as impressed with AB as I used to be, a lot of it is hit and miss now, it's a poor show when it doesn't actually apply core voltage on it's own TFIII, although it stated higher voltage-Gpu-z showed that it hadn't budged.

Where as core voltage applied via Trixx(Gpu-z reported higher voltage) and the higher clocks given confirmed applied voltage through Trixx.
Click to expand...

I've had the same with AB too.
 
Just come back after the pc being off for an hour or so and it's back jumping about all over the place again.

I have now officially given up. :(
 
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