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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 928

post #9271 of 38701
Quote:
Originally Posted by LAF View Post

I have mine at 1200/1600 with 1.225V, but I have to run 100% fan to keep temps under control. I can go higher, but it hardlocks once it hits ~75C

1200/1600 1.237 both on water with 2x fesar radiator ... on load ultra with BF3 (sig rig) I get to about 59/60... idles stock 28-32 - they are very sensitive to heat ... likely your vrm is even hotter hence the lock
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post #9272 of 38701
Quote:
Originally Posted by wirefox View Post

1200/1600 1.237 both on water with 2x fesar radiator ... on load ultra with BF3 (sig rig) I get to about 59/60... idles stock 28-32 - they are very sensitive to heat ... likely your vrm is even hotter hence the lock

No, memory and VRMs only hit 56C and 50C respectively - that is where the TFIV excels it seems
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post #9273 of 38701
Quote:
Originally Posted by wirefox View Post

1200/1600 1.237 both on water with 2x fesar radiator ... on load ultra with BF3 (sig rig) I get to about 59/60... idles stock 28-32 - they are very sensitive to heat ... likely your vrm is even hotter hence the lock

Dame, your cards get warm. Mine on water with 1 Feser quad with 4 R4's on it and my 2700k @ 5ghz idle at 30-33c and only load at 45c running 1200/1600 1.225v and about 48c 1275/1750 1.275v. I have a custom tech bench tho not a case.
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post #9274 of 38701
Quote:
Originally Posted by LAF View Post

What fan speed are you using? My 1200/1600 hits 85C at 100%, but if I go up to 1250 (haven't tested in between because I like multiples of 50 for my GPU clock tongue.gif) it hardlocks once it hits the 75ish mark. I've tried with more voltage, same result.

i just use the auto AB has. highest fans have gotten is 60ish.

what case do you have? i have pretty decent airflow in my case, that is helping with temps.
post #9275 of 38701
Quote:
Originally Posted by gotendbz1 View Post

i just use the auto AB has. highest fans have gotten is 60ish.
what case do you have? i have pretty decent airflow in my case, that is helping with temps.

I have a HAF X, so pretty much the same thing you have, and I have decent airflow too. Who knows? It was getting to 85C, but I've tidied up cables, changed my D14 for a H100 (which I'm sure helps airflow, no more big hunk of metal in the way), and have a 140mm fan ziptied into my 5.25 bays to blow straight across the GPU, and temps have dropped to ~71C. Might try to push a bit more out of it now, but then again maybe not, 1200 is plenty smile.gif
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post #9276 of 38701
When will new 7970 april drivers be released beta or whatever?
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post #9277 of 38701
Guys, what happens when the card receives less power than it needs? I mean, mine at 1050Mhz with 1.1V it crashes on BF3. With 1.112 everything seems normal... I'd like to know, if this voltage ain't enough either, is there any chance the card not giving the 100% ? Or when it hasn't sufficient power, it just crashes? Could I get more if I give a little more voltage ( 1.118 ) for example?

I hope you get what I'd like to know...
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post #9278 of 38701
I've gotten 1225MHz stable through Heaven and 3DMark11 @ 1.25V with both of my Lightnings. My top card will hit 1150MHz at stock voltage but my bottom card only gets to 1125MHz...
post #9279 of 38701
Yeah. Unfortunately even the Lightings dont have cherry picked chips on them. If they did, i would have bought it instead of my GB windforce card. Lighting has no overclock bonus as long as you dont use extreme cooling. On air its tottally same than others - overclock only depending on its GPU quality.
My Gigabutt Windforce does 100% stable 1125mhz on 1100mv, 1230mhz on 1200mv and i can bench 1315mhz on 1300mv.
post #9280 of 38701
Quote:
Originally Posted by Supranium View Post

Yeah. Unfortunately even the Lightings dont have cherry picked chips on them. If they did, i would have bought it instead of my GB windforce card. Lighting has no overclock bonus as long as you dont use extreme cooling. On air its tottally same than others - overclock only depending on its GPU quality.
My Gigabutt Windforce does 100% stable 1125mhz on 1100mv, 1230mhz on 1200mv and i can bench 1315mhz on 1300mv.

How good is the thermals / acoustics at 1230 Mhz. Is it stable for long periods of gaming (3+ hrs) . I would like to know so that I can recommend to a friend of mine who is looking to buy a high end card
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