AMD - How to Change The Power Control/Limit from +20% to +50%

Loxa · 13 May 2013 at 23:33

tommybhoy said:
Have you tried His iTool and Trixx for voltage adjustment?

Can't remember if you wan't the voltage to increase or decrease either.

Card dependant, some will, some won't, but it's probably more dependant on voltage over what the power limit can do.

Ok, was just wondering if at 0% i would get lower temps than at 20%

tommybhoy · 14 May 2013 at 00:00

~>Dg<~ said:
okay on my 7950 i have 1050/1575

with just the 20 percent added only using ccc overdrive at mo.

i haven't touched the voltage . temps seem very nice aswell.

new to oc these 7950s so any help would be appreciated

If it's just for playing games, then if you can push to 1100MHz on the core, your in a good place not having to muck about with any other OC tools, the extra Power Limit, may help.

If you want max clocks, it's just the same as any other card, find the limit on the core first then dial back a bit checking stability with Heaven or a hard hitter like Sleeping Dogs.

Reset core to stock and repeat on the vram, then go for both clocks applied adding voltage if you can/want to push even further.

If you want to add voltage, then matt's thread has everything you need to know:

http://forums.overclockers.co.uk/showthread.php?t=18431335

Thrust4Money said:
Ok, was just wondering if at 0% i would get lower temps than at 20%

Test it with and without Power Limits, use Gpu-Z and click the temp sensor to maximum, stress the card and you'll find out.

pob9 · 16 May 2013 at 18:23

im getting different voltage reading depending what program i use ab, hwinfo, aida 64. so not sure what voltage im getting now. gonna just wait till i get a multimeter and check for myself. i was looking to reduce the voltage from 1.25 to get temps down a little

Zeed · 20 Aug 2013 at 18:51

Still working on new 13.8 beta2 just tested

Diagro · 20 Aug 2013 at 18:54

Any idea how to get this working on a 7990?

tommybhoy · 20 Aug 2013 at 19:34

^
I'm presumming it works the same as CrossFire Diagro, you modify your original PP_PhmSoftPowerPlayTable settings in 0000(or whatever yours may be), and copy and add(as they don't exist) said PP_PhmSoftPowerPlayTable settings to 0001(or whatever yours may be) after the line-"AdapterDesc"="AMD Radeon HD 7900 Series"

This will disable ulps/switch off zero core though.

LtMatt · 20 Aug 2013 at 19:36

Would there be two different folders though tommy? I assumed with a dual gpu card on one pcb it would just be one folder. Either way should be the same process.

Diagro · 20 Aug 2013 at 19:47

I have 0001 0000 0002 0003 0004 0006 0008 0009 lol

LtMatt · 20 Aug 2013 at 20:03

Diagro said:
I have 0001 0000 0002 0003 0004 0006 0008 0009 lol

Yikes. I only have two folders. Guess thats the benefit from using driver fusion as per my AMD thread.

Over to master tommy for assistance.

Diagro · 20 Aug 2013 at 20:35

I do use driver fusion.
I might just reinstall windows when I rebuild my pc

LtMatt · 20 Aug 2013 at 20:36

Diagro said:
I do use driver fusion.
I might just reinstall windows when I rebuild my pc

Yes i forgot i recently reinstalled Windows 8, that's probably why i only have two.

Diagro · 20 Aug 2013 at 20:53

The new drivers work on windows 8? I do have a key here.

Will it allow one to install win 8 over win 7 and have it install like new? Windows is full of crap now haha

LtMatt · 20 Aug 2013 at 20:59

Diagro said:
The new drivers work on windows 8? I do have a key here.

Will it allow one to install win 8 over win 7 and have it install like new? Windows is full of crap now haha

Just install windows 8 straight off. Don't bother using that upgrade feature, it leaves a ton of stuff behind from windows 7. You also get less fps according to benchmarks ive seen that did the upgrade.

You can download a Windows 8 install legitimately from websites online. All you then need to do during install is use a Windows 8 install key. This gives you 30 days to try the OS. Once its installed you can activate it using your own legitimate Windows 8 key.

Install Key

XKY4K-2NRWR-8F6P2-448RF-CRYQH

Diagro · 20 Aug 2013 at 21:08

Oh sweet thanks.
Fancy trusting me a win 8 dl link?

I dunno which windows 8 version I have hmm

tommybhoy · 21 Aug 2013 at 00:07

LtMatt said:
Over to master tommy for assistance.

@Diagro, if your doing a new install and can afford a gimped registry, my easy answer to your question is to add the PP_PhmSoftPowerPlayTable settings to all of them.

I don't think it will do any harm anyhow(but could be very wrong) but as long as you back up each reg setting, then I don't see how you couldn't launch into safe mode and restore each value.

Diagro · 21 Aug 2013 at 00:28

OK mate. Will have a go tomorrow

LtMatt · 21 Aug 2013 at 06:45

Diagro said:
Oh sweet thanks.
Fancy trusting me a win 8 dl link?

I dunno which windows 8 version I have hmm

I used this when i did it. Since then ive put it on DVD and on my usb stick. It takes about 10 minutes to install & setup Windows 8 via usb.

xTommy92 · 5 Sep 2013 at 00:37

Thankyou Tommy, just fitted my new 7950 today in crossfire and followed this guide. Can now see upto +50%!!
Will have a play around overclocking both of the cards!

Tom

tommybhoy · 5 Sep 2013 at 01:29

Np,

Just don't go whacking it up to 50% in a hurry, ~+30/+35% is probably where it needs to be.

LtMatt · 5 Sep 2013 at 07:16

Tommy i think a HIS 7950 Ice-Q boost thread is in order. People probably need to be educated about this thread and the cards throttling issue under large overclocks.