Finally the Asus Matrix 280X has arrived! at least some of em
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Not making any differnence. Not sure why.
I issued
setx GPU_MAX_ALLOC_PERCENT 100 but the gpu usage in after burner is only like 80% I even tried 1200 for core clock and it still will not go to 100% gpu usage. -
Oh man… just… ! :D
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[quote name=“wildchild22” post=“43030” timestamp=“1386772298”]
Not making any differnence. Not sure why.I issued
setx GPU_MAX_ALLOC_PERCENT 100 but the gpu usage in after burner is only like 80% I even tried 1200 for core clock and it still will not go to 100% gpu usage.
[/quote]what card do you have? linux or win?
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Hijacked! Lol
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[quote name=“svennand” post=“42601” timestamp=“1386700921”]
Sorry guys, could not help myself.For all you guys that is waiting on backorder.
Just recieved another shipment today ;D[img]http://s23.postimg.org/6eku7zror/bilde_1.jpg[/img]
[/quote]:'(
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I have MSI R9280x gaming 3G
using windows 8 driver version is 3.9.I cannot go above intensity 13 or it is all errors that is why I cannot get 100% gpu uage as the intentisty is too low.
[quote name=“svennand” post=“43045” timestamp=“1386774499”]
[quote author=wildchild22 link=topic=5620.msg43030#msg43030 date=1386772298]
Not making any differnence. Not sure why.I issued
setx GPU_MAX_ALLOC_PERCENT 100 but the gpu usage in after burner is only like 80% I even tried 1200 for core clock and it still will not go to 100% gpu usage.
[/quote]what card do you have? linux or win?
[/quote] -
[quote name=“wildchild22” post=“43057” timestamp=“1386776367”]
I have MSI R9280x gaming 3G
using windows 8 driver version is 3.9.I cannot go above intensity 13 or it is all errors that is why I cannot get 100% gpu uage as the intentisty is too low.
[/quote]
13 is normal. dont sweat it
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7970 and 280X only use intensity 13.
7950 and older go to 20.your missing one more setx startup sentence
but i cant remember it from my phone:P maybe someone else can assist. -
Yeah I done both of these!
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1 -
[quote name=“wildchild22” post=“43106” timestamp=“1386784276”]
Yeah I done both of these!setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
[/quote]Seems there no easy prefinished parameters for your cards (some just wont deliver the hashrate that others do with those gpu/mem values).
You need to follow this guide: https://bitcointalk.org/index.php?topic=28402.msg1635964#msg1635964
Or a similar one to tweak the best settings out of your card.Start with running cgminer without any set thread-concurrency and see what cgminer suggests (in cgminer folder there is a .bin file that has the parameters as name).
Most likely however you’ll end up on 8192 anyways (seems the prefered value for 7970/280X, 7950 however likes 20k values)Now you need to do this with autofan on so you dont fry your cards. also would recommend setting cutoff temp to 90 degrees or something.
start with your memory speed (suggest you start lower at for example 1200Mhz and work your way up),suggest increments of 25Mhz at the time, let it run for 30 seconds for each change. do this until the driver card crash.
Now restart and set the value 25Mhz below what the crashing point was.
Now you start the same with the core speed (increment of 5Mhz), you should start at around 0.57 ratio of your mem speed (best performance is usually within 0.57-0.6 of the mem clock).
Hashrate should climb a little for each increase, until it will suddenly drop. When this happens go backwards in speed with decrement of 1Mhz. and voila you should see your cards sweetspot.If the core dont want to run as fast without crashing, you have to bring down the memclock a bit again (so you get within the 0.57-0.6 ratio)
Hope this helps=)
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thank you I will test this out. Thanks for the detailed info