4 or 8 GB of ram?
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Any performance increase using 8 instead of 4??
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Short and sweet… No. 4GB is all you need.
I run 4GB in all my rigs (4x7970 - 3+MHs) and they perform just fine. Also cgminer is only using 177MB of RAM.
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[quote name=“Nutnut” post=“18936” timestamp=“1372619051”]
Short and sweet… No. 4GB is all you need.I run 4GB in all my rigs (4x7970 - 3+MHs) and they perform just fine. Also cgminer is only using 177MB of RAM.
[/quote]Thanks! very clear answer ;)
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Ditto on my rigs with 4x7950, even runned them with 2GB each, no problem.
The rumors around the web regarding a minimum of 2GB pr card is bogus as far as i have tested… -
It’s good to know, because the word going around the forum I was reading up on for Litecoin was giving advice saying that you wanted as much RAM as possible. Glad I was set straight that they should’ve only been referring to the VRAM on the graphics cards before I put in a whole lot more money than I should’ve.
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[quote name=“Nutnut” post=“18936” timestamp=“1372619051”]
Short and sweet… No. 4GB is all you need.I run 4GB in all my rigs (4x7970 - 3+MHs) and they perform just fine. Also cgminer is only using 177MB of RAM.
[/quote]It uses a lot more. Not as much as Reaper though. 177Mb is for active buffers only.
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And the active is all you really need to worry about as inactive can be paged out. In any case, there’s very little point in over complicating the answer. 2Gb is fine, 4Gb is more than needed, 8Gb is borderline lunacy for a mining rig.
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[quote name=“Nutnut” post=“18963” timestamp=“1372630719”]
And the active is all you really need to worry about as inactive can be paged out. In any case, there’s very little point in over complicating the answer. 2Gb is fine, 4Gb is more than needed, 8Gb is borderline lunacy for a mining rig.
[/quote]Paging to HDD or even SSD is very slow. I agree that 4Gb is usually enough for a mining rig and even 2Gb is all right for Linux. Damn Windoze 7 is a memory hungry beast and 8 is no better.
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used 4gb on windows 7/8 no problem.
even 2gb worked like a charm regarding hashrate.
the windows “experience” on the otherhand was sluggish with only 2gbbut as soon as cgminer was started up there was no prob.
run linux now. works like a charm with 2/4gb…
however buy 4gb:) -
Svennand, can you set intensity higher than 13 on Linux with HD79x0 hardware? Tried all tricks, no luck.
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[quote name=“ghostlander” post=“19924” timestamp=“1373003293”]
Svennand, can you set intensity higher than 13 on Linux with HD79x0 hardware? Tried all tricks, no luck.
[/quote]7950 i set at I20, 7970 on the other hand is no point. setting it higher than I13 just gives me less hash.
However i was able to get 760khash with 80degrees on the sapphire 7970, however the computer crashed after about 10min.
I do however not think that the reason for this was the 7970. but rather a pretty faulty psu, seems like my enemerax 1500 gets a stroke when going over 700w…now i get 620khash with stock settings (sapphire 7970 oc ed), and around 550 pr 7950 card.
The 7970 do generate the occationally hw error, but i do think that has something to do with power peak and psu…
http://50.87.190.116/monitoring/ (fuzzy1 has the one 7970 card, fuzzypc is the xfx 7970, and the rest is all 7950) -
[quote name=“svennand” post=“19945” timestamp=“1373013306”]
[quote author=ghostlander link=topic=2422.msg19924#msg19924 date=1373003293]
Svennand, can you set intensity higher than 13 on Linux with HD79x0 hardware? Tried all tricks, no luck.
[/quote]7950 i set at I20, 7970 on the other hand is no point. setting it higher than I13 just gives me less hash.
However i was able to get 760khash with 80degrees on the sapphire 7970, however the computer crashed after about 10min.
I do however not think that the reason for this was the 7970. but rather a pretty faulty psu, seems like my enemerax 1500 gets a stroke when going over 700w…now i get 620khash with stock settings (sapphire 7970 oc ed), and around 550 pr 7950 card.
The 7970 do generate the occationally hw error, but i do think that has something to do with power peak and psu…
http://50.87.190.116/monitoring/ (fuzzy1 has the one 7970 card, fuzzypc is the xfx 7970, and the rest is all 7950)
[/quote]I’m maxed at 630KH/s per each 1200MHz chip of ARES II. Can do 1250MHz, but reboots occasionally. The PSU is fine Chieftec 1200W (BPS-1200C), a monster with two 600W units inside. Intensities higher than 13 produce floods of HW errors. I’ve tried other HD7970, they do the same. Various drivers, SDK, Linux distros, all the same. BTW, what SW do you use for webstats?
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Simple Cgminer Remote monitor
