Low hashrate (580 kh) on Gigabyte's 7970\.
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This screen has been taken like 10 min after starting cgminer. Temperatures stops at 60-69 C degrees.
[img]http://imageshack.us/a/img89/6720/930f.png[/img]Here’s the pic of my rig. I’ve placed them in a way that none of cards heats another one.
[img]http://imageshack.us/a/img849/1223/z1go.jpg[/img]
My cards are:
3x Gigabyte 7970 OC (GV-R797OC-3GD)
Bios version: F72 - [url=http://www.gigabyte.pl/products/page/vga/gv-r797oc-3gd/download/bios]http://www.gigabyte.pl/products/page/vga/gv-r797oc-3gd/download/bios[/url] (it was already in there)
PSU: 1000W be quiet
I’ve tried Cgminer 3.1.1 and 3.2.1
I’ve tried Catalyst 12.6 with SDK 2.7 and newest (13.9 with newest SDK) - same result
I’m using Windows 8.1 x64, 2 gb ram (but while cgminer workin, there’s still 1 gb free ram)Here’s my cgminer config:
[size=7pt][b]“intensity” : “13”[/b],
[b]“thread-concurrency” : “8192”[/b],
[b]“g” : 2[/b],
[b]“worksize” : “256”[/b],
[b]“vectors” : “1”[/b],
[b]“gpu-engine” : “1145”[/b],
[b]“gpu-memclock” : “1600”[/b],
“kernel” : “scrypt”,
“lookup-gap” : “0”,
“gpu-fan” : “95”,
“gpu-memdiff” : “0”,
“gpu-powertune” : “20”,
“gpu-vddc” : “0.000”,
“temp-cutoff” : “95”,
“temp-overheat” : “85”,
“temp-target” : “75”,
“api-listen” : true,
“api-port” : “4028”,
“expiry” : “120”,
“failover-only” : true,
“gpu-dyninterval” : “7”,
“gpu-platform” : “0”,
“gpu-threads” : “1”,[/size]I run cgminer with such .bat file:
[code]setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
del *.bin
cgminer.exe[/code]Whenever I change gpu frequency to more than 1145 Mhz, there’s a problem with a driver on one card and that card stops working. I’ve downloaded Gigabyte OC Guru II but I wasnt using that (just, because I can change all that stuff in cgminer config). I believe my card’s voltage is locked but still, I’ve seen many threads about people getting 700kh+ easily with those cards. Do any of you mind giving me some tips on increasin my hashrate? :)
Thanks :P :) -
Try a higher setting on ‘Intensity’ like 18.
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Anything above 13 makes cgminer spam with HW errors
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I suggest, you follow the Readme.scrypt instructions of cgminer on github.com.
Simply go to [url=http://WWW.github.com]WWW.github.com[/url], enter cgminer in the search and select a project and check for the file.If you can’t find one, try bfgminer in the search. Both programs have comparable code and can be tuned in the same way.
hash rates for scrypt mining are not only defined by clock speed, but also by the ratio of GPU clock to memory clock. In the readme a procedure to find the best ratio for your card is described.
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set the Intensity to 16+
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[quote name=“Wellenreiter” post=“41650” timestamp=“1386517203”]
I suggest, you follow the Readme.scrypt instructions of cgminer on github.com.
Simply go to [url=http://WWW.github.com]WWW.github.com[/url], enter cgminer in the search and select a project and check for the file.If you can’t find one, try bfgminer in the search. Both programs have comparable code and can be tuned in the same way.
hash rates for scrypt mining are not only defined by clock speed, but also by the ratio of GPU clock to memory clock. In the readme a procedure to find the best ratio for your card is described.
[/quote]
I’ve been trying that for 2 hours now. Nothing. I cant go above 581 kh. First, I’ve set gpu clock to 1k and memory clock to 1,5k in cgminer and i ran it. After that, I ran MSI Afterburner and I was trying to find some ratio of memo-clock and GPU-clock but I couldnt find anything worth mentioning.[quote author=hklcf link=topic=5667.msg41689#msg41689 date=1386521943]
set the Intensity to 16+
[/quote]
Any intensity above 13 spams my screen with HW errors.
