Radeon 7950 Max safe overclock ?

[brandon888]

Radeon 7950 Max safe overclock ? Just Got it for BF4 ....

won't touch voltages ! as i see MAX factory overclocked cards are with 1 GHZ .. but can i oc it ever further without reducing lifetime of card and without damaging it ....


Is This possible to OC it safe till 1050 , 1100 or even 1200 ??

 

[Sohaltang]

I doubt you can get higher than 1100 without over volting. Dont be scared, throw some voltage to it and see how high it will go.

 

[Bubbleawsome]

An overclock without a voltage increase will not damage the card. I doubt you will get that high, but don't be afraid to pump 1.25v or even maybe up to 1.3v into the card if you have good cooling. They can take it.

 

[KingFatty]

Overclocking without additional voltage is like... eating fat-free bacon. Why bother?

 

[Face2Face]

What card is it?

 

[brandon888]

Without Voltage tweak if i can get safe 1100 mhz then its cool ...


another thing , i have 850 WAT corsair TX PSU so i think no problem with that

 

[Stuka87]

Without Voltage tweak if i can get safe 1100 mhz then its cool ...


another thing , i have 850 WAT corsair TX PSU so i think no problem with that

Way more PSU than you need.

I highly doubt you will get anywhere close to 1100 at stock voltage. Unless you have a 7950 boost with the 1.25V default voltage. Non boost cards have lower stock voltage.

 

[Fastx]

Radeon 7950 Max safe overclock ? Just Got it for BF4 ....

won't touch voltages ! as i see MAX factory overclocked cards are with 1 GHZ .. but can i oc it ever further without reducing lifetime of card and without damaging it ....


Is This possible to OC it safe till 1050 , 1100 or even 1200 ??

The Sapphire 7950 Dual X's Boost are decent cards imo which I believe is what you have, I was able to over clock my Dual X's to 1150/1600 and ran several Heaven 4.0 Extreme BM's no problems and no artifacts. I never took my voltage over stock (1.25) just keep an eye on your temp per your case air flow and use a fan profile to keep temp in check.

 

[Techhog]

Way more PSU than you need.

I highly doubt you will get anywhere close to 1100 at stock voltage. Unless you have a 7950 boost with the 1.25V default voltage. None boost cards have lower stock voltage.

This. Hell, I can't even get a stable 1100 at 1.25v (though there's a chance that my PSU wasn't getting great airflow)

 

[Fastx]

A few other things when you oc disable UPLS, set power to +20, have your Dual X BIOS switch set to where the blue led light is on. Also fwiw I would overclock it using TriXX 4.6 and imo leave OD in CCC disabled when using Trixx.

 

[Ieat]

Not to hijack the thread but has anyone heard of 7950's that don't like extra voltage? Mine doesn't seem to like anything above 1.19 or so. Screen just blacks out with some games(Crysis 3) if I go over that.

 

[brandon888]

The Sapphire 7950 Dual X' yes baby !


1 GHZ was stable for me and 100% safe im sure ... hope can reach 1100 with no voltage tweak and also about temps


i had like 52 C with 43% fanspeed while playing bf4 on ultra ... so i think it wont even hit 60 even if i OC to 1100

 

[Stuka87]

Not to hijack the thread but has anyone heard of 7950's that don't like extra voltage? Mine doesn't seem to like anything above 1.19 or so. Screen just blacks out with some games(Crysis 3) if I go over that.

What clock speed, and what temp was it at when that happened?

 

[Ieat]

What clock speed, and what temp was it at when that happened?

I'm currently stable at 1.19v 1205/1415. Even trying to get 1210 on the core all the way up to 1.26v I would get the black screen. Temps are always kept in the low 70's or less. I know easiest way to test my theory would be to up my voltage and keep clocks at 1205 but I'm not running overclocking software anymore. I'm using a modified bios and since I'm good right now I don't see the point in messing with it any more. I was just curious if anyone has run into a similar situation before.

 

[Stuka87]

I'm currently stable at 1.19v 1205/1415. Even trying to get 1210 on the core all the way up to 1.26v I would get the black screen. Temps are always kept in the low 70's or less. I know easiest way to test my theory would be to up my voltage and keep clocks at 1205 but I'm not running overclocking software anymore. I'm using a modified bios and since I'm good right now I don't see the point in messing with it any more. I was just curious if anyone has run into a similar situation before.

Ahh, thats not voltage related. You are just at the max of what your card can handle. 1200 core is a very good OC.

 

[Shmee]

yes 1200 or over is a very good OC for any air cooled 7950. The dual X which Brandon has is fine at stock voltage, should be able to do 1050 or mb more with that, GL! When I had mine I had it settled at 1080.

 

[brandon888]

yes 1200 or over is a very good OC for any air cooled 7950. The dual X which Brandon has is fine at stock voltage, should be able to do 1050 or mb more with that, GL! When I had mine I had it settled at 1080.

so if i just simply set clock to 1050 and power to 20% , it's all i have to do yes ? and my card won't die faster or artefact ?

sure i will watch temps but im sure it won't be problem cause card is really cool

 

[Tohtori]

Sorry about being spoilsport but there is no such thing as max safe overclock.
There is always risk in overclocking and there really isn't anyone except yourself who can consider risk vs reward.

...but really, what ever you do, that piece of electronics is bound to become waste sooner or later :biggrin:

 

[J Macker]

so if i just simply set clock to 1050 and power to 20% , it's all i have to do yes ? and my card won't die faster or artefact ?

sure i will watch temps but im sure it won't be problem cause card is really cool

No, you won't reduce the life by overclocking to 1050mhz. You will get reduced life by running at 80-100% fan speed though.

I have a whole bunch of 7950's that I've been using to mine litecoins for 6 months and I have them set between 1030-1050mhz at 1.05v. Dropping the voltage really helps lower temps. Some cards were even stable dropping down to 1.0 v.

 

[Shmee]

Something to keep in mind, it is excess voltage that can damage chips, not frequency, for the most part. Adding more voltage can to a degree allow for higher stable OCs, but that shouldn't be needed when stock is 1.25v. Raising frequency to high can cause artifacts to occur or even a crash/bsod if too high, but shouldn't do any damage to the chip, it just makes it unstable. This is when you back off the frequency. The general trick to OCing, for the most part, is finding your best stable frequency at a reasonable voltage.

 

[Sohaltang]

It is very unlikely you will fry the card without moding the bios. Your will just cause it to crash until your find the "max overclock". Then bump it down a little more. Would not concern myself with product life too much. It will likely be obsolete in 5 years anyway

 

[BallaTheFeared]

Core could be 2500MHz, it wouldn't matter.

What matters is heat, and voltage.

If you have a 1.25v card I'd undervolt to around 1.2v or lower and max out the core on that.

Tahiti starts to suck the socket dry for little return for most at higher voltages.

 

[brandon888]

my default votlage is 0.95 .... without touching it i reached 1100 MHZ what is enough for me ... also temps are like 57 with 50% fanspeed

 

[monkeydelmagico]

my default votlage is 0.95 .... without touching it i reached 1100 MHZ what is enough for me ... also temps are like 57 with 50% fanspeed

.95 at idle. With +20% your probably going up in voltage under load. Doesn't really matter though because your doing 1100mhz at an insanely low temp of 57.

What are you using to benchmark?

 

[ZipSpeed]

Both my 7950s run at 1 GHz @ 1.025V. I found this to be the best compromise as I was looking to keep that fan noise as low as possible without sacrificing too much performance. TF3 fans are annoyingly loud at high RPMs.