2 BTC bounty - why can't I get lower Mem clocks? - page 2.

the joint

legendary

Activity: 1834

Merit: 1020

Quote from: wachtwoord on February 22, 2012, 05:22:05 PM

Why not just use Afterburner?

Edit the MSIAfterburner.cfg

[ATIADLHAL]
EnableUnofficialOverclocking = 1
UnofficialOverclockingEULA = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode = 2
AccessibilityCheckingPeriod = 0

And your good to go.

I think you need to do this to the MSIAfterburner.cfg file.

On my 6970s, I wasn't able to go to 685 until I modified this file.

yochdog

legendary

Activity: 2044

Merit: 1000

Quote from: TheHarbinger on February 22, 2012, 11:06:46 PM

Quote from: the joint on February 22, 2012, 09:02:51 PM

Quote from: bulanula on February 22, 2012, 07:02:38 PM

Yeah it would be interesting if you could test 300 memclock on the 7970 and if that is as effective as on the 5970s etc.

Try flashing BIOS and report back !

Without killing your card.

Reference 7xxx cards are like the reference 6xxx cards. Without a change in the card firmware, they are locked to a minimum memclock related to the GPU clock. I believe you can only go 150 down without it resetting to stock speeds. And mucking about with the firmware this early in their release cycle could be risky.

So why can I not get it to even go to 600 if 150 is the limit?

chiropteran

sr. member

Activity: 348

Merit: 250

Quote from: TheHarbinger on February 22, 2012, 11:06:46 PM

Reference 7xxx cards are like the reference 6xxx cards. Without a change in the card firmware, they are locked to a minimum memclock related to the GPU clock. I believe you can only go 150 down without it resetting to stock speeds. And mucking about with the firmware this early in their release cycle could be risky.

I can lower my mem clocks down to 300mhz or lower on my 6970 no problem. I've never touched the firmware. It is a reference design.

TheHarbinger

sr. member

Activity: 378

Merit: 250

Why is it so damn hot in here?

Quote from: the joint on February 22, 2012, 09:02:51 PM

Quote from: bulanula on February 22, 2012, 07:02:38 PM

Yeah it would be interesting if you could test 300 memclock on the 7970 and if that is as effective as on the 5970s etc.

Try flashing BIOS and report back !

Without killing your card.

Reference 7xxx cards are like the reference 6xxx cards. Without a change in the card firmware, they are locked to a minimum memclock related to the GPU clock. I believe you can only go 150 down without it resetting to stock speeds. And mucking about with the firmware this early in their release cycle could be risky.

the joint

legendary

Activity: 1834

Merit: 1020

Quote from: bulanula on February 22, 2012, 07:02:38 PM

Yeah it would be interesting if you could test 300 memclock on the 7970 and if that is as effective as on the 5970s etc.

Try flashing BIOS and report back !

Without killing your card.

bulanula

hero member

Activity: 518

Merit: 500

Yeah it would be interesting if you could test 300 memclock on the 7970 and if that is as effective as on the 5970s etc.

Try flashing BIOS and report back !

wachtwoord

legendary

Activity: 2324

Merit: 1125

I have a 6850 and run at 925/250 (so 250 Mhz mem clock) with Afterburner and have not flashed my bios

the joint

legendary

Activity: 1834

Merit: 1020

Quote from: yochdog on February 22, 2012, 06:25:24 PM

Quote from: wachtwoord on February 22, 2012, 05:22:05 PM

Why not just use Afterburner?

Edit the MSIAfterburner.cfg

[ATIADLHAL]
EnableUnofficialOverclocking = 1
UnofficialOverclockingEULA = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode = 2
AccessibilityCheckingPeriod = 0

And your good to go.

I would prefer to do it within CGminer

If it's anything like my non-reference 6970s, then the best you can do is a 150 clock mem-diff unless you flash the BIOS. Afterburner let me get my memory down to 685 on my 6970s and that was the best I could do without flashing the BIOS (which I won't do because I don't trust myself to do it).

yochdog

legendary

Activity: 2044

Merit: 1000

Quote from: wachtwoord on February 22, 2012, 05:22:05 PM

Why not just use Afterburner?

Edit the MSIAfterburner.cfg

[ATIADLHAL]
EnableUnofficialOverclocking = 1
UnofficialOverclockingEULA = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode = 2
AccessibilityCheckingPeriod = 0

And your good to go.

I would prefer to do it within CGminer

wachtwoord

legendary

Activity: 2324

Merit: 1125

Why not just use Afterburner?

Edit the MSIAfterburner.cfg

[ATIADLHAL]
EnableUnofficialOverclocking = 1
UnofficialOverclockingEULA = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode = 2
AccessibilityCheckingPeriod = 0

And your good to go.

chiropteran

sr. member

Activity: 348

Merit: 250

Have you tried clocktweak? I don't have a 7000 series card, but it lets me lower my mem to 300mhz easily on my various 5830s, 5850s, and 6970.

yochdog

legendary

Activity: 2044

Merit: 1000

I am using CGminer on a dual 7970 mining rig.

I have the config file adjusted to load these settings:

Engine: 1150
Mem: 300
Intensity: 9
fan: 70

Using Windows 7

Everything works great, and they hash away at 690 MH/s each, but the damn memory clocks refuse to go to anything lower that 1,000. And they will only go that low after I manually set them within CGminer. Am I missing something?

2 BTC bounty to the first person who can help me out and successfully get my mem speeds to where I have seen them on other systems.

Topic: 2 BTC bounty - why can't I get lower Mem clocks? - page 2. (Read 3317 times)