GTX 560 problem
22 Jul 2012 16:34:52 UTC
Topic 196458
(moderation:
Hi,I`am getting pretty slow times for a gtx 560.They are nearly two times slower than a 460gtx.Around 5500s.Before this i ran 2 wu at a time and they were at 2000s.I have a p35 platinum combo with some reason the main PCIe x16 slot stopped working,when i put the gpu it wont boot.I have an another slot,cause the mb supports crossfire but i found out the it operates at x4 speed.
Can this contribute to slow times?I ran MW and the times are the same.
Tomorrow i`m getting 6970,will i need a new motherboard aswell?
GTX 560 problem
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Eintein's apps for GPU needs a lot of CPU usage and there is a significant amount of data that goes between GPU and CPU through the PCIe bus... So yes, it's expected to see a worst performance using a 4x slot than a 16x slot, and this becomes more noticeable with faster GPUs.
But anyway, i think that even running on a 4x slot a 560 should not slow down to half the speed of a 460... Ive used 2 (old) gt9500 GPU's on the same system but one at 16x and the other at 1x and the speed ratio on Einstein was 3 hours vs 5 hours...
There are some conditions in
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There are some conditions in which an nvidia GPU will downclock itself durably. The few that I have experienced were something like a factor of two and were fixed on the next system reboot. You might consider using gpu-z or something similar to check the actual current operating clock rate. Despite the name similarity, this tool comes from techpowerup, not from the folks behind cpu-z. It is also useful for observing temperature and fan speed (all on the sensors tab).
you can download gpu-z at this techpowerup download location.
I'm not disagreeing that a slow bus slot would hurt also, but this possibility might be worth a check.
I disassembled the entire pc
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I disassembled the entire pc and put it back together.Now it boots normally and its a lot faster.GPU-Z shows pci-e x16 v1.1 and core clock 930Mhz.
Vladimir, Just as a data
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Vladimir,
Just as a data point my GTX560 has typical run times of 3,300 seconds with about 700 sec of CPU time. CPU is I7-2600K.
Joe
http://einstein.phys.uwm.edu/
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http://einsteinathome.org/host/4140957/tasks&offset=20&show_names=0&state=3
Then why is a gtx 460 faster???
RE: Then why is a gtx 460
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Perhaps two tasks per GPU (560) versus one task per GPU (460)?
Gruß,
Gundolf
Computer sind nicht alles im Leben. (Kleiner Scherz)
On my card 1wu = 3300s 2wu =
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On my card
1wu = 3300s
2wu = 4800s
The 4xpcie is 100% the
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The 4xpcie is 100% the problem. I use one card in a 4x too for einstein and get 7000secs. More then two times more then in 16x.
DSKAG Austria Research Team: [LINK]http://www.research.dskag.at[/LINK]
RE: The 4xpcie is 100% the
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I am running 2 GPU tasks at a time. I also run 8 CPU tasks which could be part of the issue and also use 80% of CPU time for cooling although I now have this machine running cool enough to bump that back up to 100%.
I'm pretty sure I'm in a 16x slot but does anyone know a way from Linux to verify it?
Joe
RE: I disassembled the
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It would also probably go a lot better if it was a PCIE 2.0 slot