7970 Lightning, worth the premium?

[pgi947]

Depends on the silicone mate, I could only manage around 1180mhz on stock volts.

Temps look better, you'll notice a trend between Core and VRM temps, usually in all cases the VRM's will sit 2-5c higher then the core, memory usually 2-5c lower then the core.

 

[DK06CTR]

Yep, you should manage ~1200mhz with 1.23v. With the memory unless you're benching heaps you won't see much change between 1500-1800.

Hope I can get to 1200 for a 24/7 clock, so you reckon just leave the memory at 1500 then?

 

[pgi947]

Yeah 1500 is more then enough for gaming

 

[Geeman1979]

Hope I can get to 1200 for a 24/7 clock, so you reckon just leave the memory at 1500 then?

You should be able to run that clock with ease! If not at standard volts, a little bump in voltage will do the trick.

 

[hughythomas]

OK just played NS2 for an hour I checked Afterburner and the max was:

Core 36c
Mem 30
VRMs 40

I'm really happy with that as before I applied the TIM to the heatpads my VRMs were at 72c! Memory was also a lot higher at 45c IIRC.

This was Core @ 1100Mhz btw

 

[Gregster]

Nice temps Hughythomas but shame about the sick on your screen...I am sure it will clean off though

 

[DK06CTR]

Will leave the memory alone at 1500 then and just work on the core to 1200 think will be happy at that, to be honest it flies at the standard lightning overclock anyway.

 

[pgi947]

Yes it does

I very rarely gamed above the stock oc as I didn't see the point, especially with 12.11.

 

[Nickolp1974]

Well i knew i had a poor chip can manage another 40hz but temps are really good i think
Gpu 39
Mem31
Vrm 47, seems high next to others

This is running [email protected]/[email protected]

Edit, temps are at full load

 

[Geeman1979]

Well i knew i had a poor chip can manage another 40hz but temps are really good i think
Gpu 39
Mem31
Vrm 47, seems high next to others

This is running [email protected]/[email protected]

Edit, temps are at full load

Is that on another card you've bought? Whats the asic quality on that one for what it's worth?

 

[Nickolp1974]

no same card and asic 67.5%

 

[Geeman1979]

no same card and asic 67.5%

So what have you done different? Have you water cooled it now?

 

[Nickolp1974]

yep

 

[Geeman1979]

Nice one! May look into water cooling one day if I ever get the time.

 

[pgi947]

What clocks are you hitting under water nick?

 

[Nickolp1974]

Brick wall at 1240, that was with mem at 1400, just disco's over that, volts at 1.31, the remaining volts do not help. Temps are great but vrm seems a bit high compared to others.

 

[pgi947]

Damn, thats quite poor for a Lightning

Nudged memory voltage and maxed out aux voltage too?

 

[Nickolp1974]

Damn, thats quite poor for a Lightning

Nudged memory voltage and maxed out aux voltage too?

yep

me and chips just dont go, i dont like the fried variety and my gpu's poor and my cpu, well im at 4.7 rock solid, think 4.8's doable but gonna need over 1.5, [email protected], 1.44v are maxing @62c, dont know whats safe with 3770k anyway back on the lightning, any way of improving vrm temps, would TIM be better than the pads?


using 12.11beta4

 

[pgi947]

Wouldn't have thought so, though back when fitting GPU blocks was a pain in the bum I used to put a tiny drop of TIM on before the thermal pads to hold them in place, might help? That said, your temps look about spot on to me.

 

[Nickolp1974]

Wouldn't have thought so, though back when fitting GPU blocks was a pain in the bum I used to put a tiny drop of TIM on before the thermal pads to hold them in place, might help? That said, your temps look about spot on to me.

think i wont bother, for a few degrees just gonna wait for the 8970LTG+waterblock and enjoy my sytem for now, those temps/cpu are when running IBT so are way lower for bf3 and such.