nvidia rtx-2080

[tServo]

Originally Posted by petrw1

I fiddled with various values for:
NumStreams
GPUSievePrimes
GPUSieveSize


Only 1 made a noticeable improvement; I maxed this one:

GPUSieveSize=128

and my GhzDays/Day increased from about 3,650 to almost 4,000.

Fascinating. In your post #24 where you showed GPU-Z screen shots, I noticed GPU load % was only 77%. After you bumped GPUSieveSize, did that go up?
Thanks.

[kriesel]

Originally Posted by tServo

Fascinating. In your post #24 where you showed GPU-Z screen shots, I noticed GPU load % was only 77%. After you bumped GPUSieveSize, did that go up?
Thanks.

And what is the rate at which disk writes are occurring? Fast gpus and fast TF assignments can benefit from less classes, longer checkpoint intervals, solid state disk, or multiple mfaktc tasks running together on the same gpu to increase throughput. (While one task is writing to disk, the other can use the gpu.) It's significant even on a GTX1070. It stands to reason these effects would be larger on the much faster at TFing RTX2080 family. Power already looked healthy at 260W.

[kladner]

Originally Posted by tServo

Fascinating. In your post #24 where you showed GPU-Z screen shots, I noticed GPU load % was only 77%. After you bumped GPUSieveSize, did that go up?
Thanks.

I was a bit surprised that it was running 80C at 76%.
I see now that it was up against the power limit. 260 W is a lot to dissipate, but not that far from a 580 running hard. 80C is where I start seriously dialing back the power.

[LaurV]

Originally Posted by Mark Rose

3 x 580 at ~ 250 watts each, for about 1200 GHd/D (when running 24/7).

Originally Posted by SELROC

I am selling 7 of my Radeon RX580. Who is interested can contact me with a private message.

I think you are talking two different things. The RX580 takes less power, and for sure has no better output than ~500 GHzDays/Day. The GTX580 takes that power and produces that output. James' site puts RX580 at about 1/6 output of the fast V cards too (i.e about 530 GHzD/D instead of 3-4k GHzD/D).

Originally Posted by GP2

For factoring purposes, does it matter if it has 8GB memory or 11GB? Does it matter if it's the "Ti" version or the plain version? Is it really just as fast as a Titan V (for factoring)?

For TF, the memory doesn't matter. 128 megs is more than you need. As a "fast and dirty" rule, the "Ti" particle adds about 25% performance for TF for all cards. A bit more or less or around, depending of the card (cooling solution, etc) and system.

Originally Posted by kriesel

And what is the rate at which disk writes are occurring? Fast gpus and fast TF assignments can benefit from less classes, longer checkpoint intervals, solid state disk, or multiple mfaktc tasks running together on the same gpu to increase throughput. (While one task is writing to disk, the other can use the gpu.) It's significant even on a GTX1070. It stands to reason these effects would be larger on the much faster at TFing RTX2080 family. Power already looked healthy at 260W.

Make a RAM disk. Tools are free, and it is much faster. Anyhow, if you have more than 8G of RAM in your rig, the most of it is wasted, unless you really do heavy stuff like CAD, gaming, video editing. I still didn't find a situation where the SSD would justify its price difference compared with a normal HDD, except if you place it in a shock-exposed machine like industrial PC or production line, etc. SSDs are cool small fancy things, but which are more expensive, have much shorter lifetime, less storage space, etc., compared with HDDs, and will NOT make a good computer faster.

[S485122]

Originally Posted by LaurV

...
I still didn't find a situation where the SSD would justify its price difference compared with a normal HDD, except if you place it in a shock-exposed machine like industrial PC or production line, etc. SSDs are cool small fancy things, but which are more expensive, have much shorter lifetime, less storage space, etc., compared with HDDs, and will NOT make a good computer faster.

Any laptop is exposed to shocks, people thump on the desk on which a laptop is, they don't bother to put a laptop to sleep before walking around with it and then put it, not too gently, on another desk.
Then Windows 10 without an SSD is not workable : you can have 16 GiB of memory, it will still take 5 minutes from power on before the hard disk is not overworked (the activity led starts blinking instead of burning continuously), then count a few more minutes before you are logged on and have started your usual programs. With an SSD the whole process takes a little more than a minute, it is true that once started one can readily work even with an HDD.
I can't say anything if you reply that a computer with Windows 10 is NOT a good computer : - )

Jacob

[ATH]

Originally Posted by petrw1

Seems to me it was in the 260 range.

From your screenshot the fan is only running at 61% at 80C. In my opinion it should be running 100% or at least 80% at that temperature.

Maybe you should use program like MSI Afterburner or similar, where you can set what fan speed it should be using at different temperatures.

[Mark Rose]

Originally Posted by LaurV

I think you are talking two different things. The RX580 takes less power, and for sure has no better output than ~500 GHzDays/Day. The GTX580 takes that power and produces that output. James' site puts RX580 at about 1/6 output of the fast V cards too (i.e about 530 GHzD/D instead of 3-4k GHzD/D).

My 580's are GTX 580's. I keep forgetting about the RX 580.

Make a RAM disk. Tools are free, and it is much faster. Anyhow, if you have more than 8G of RAM in your rig, the most of it is wasted, unless you really do heavy stuff like CAD, gaming, video editing. I still didn't find a situation where the SSD would justify its price difference compared with a normal HDD, except if you place it in a shock-exposed machine like industrial PC or production line, etc. SSDs are cool small fancy things, but which are more expensive, have much shorter lifetime, less storage space, etc., compared with HDDs, and will NOT make a good computer faster.

SSDs are cheap now. For a basic OS disk 250 GB or less, it's cheaper to buy an SSD than a traditional hard drive at this point.

I just bought a 2 TB SSD for US$227.

[kladner]

Originally Posted by Mark Rose

Obviously if you're doing TF getting the RTX 2000 series is the way to go from an energy efficiency standpoint. But lots of crypto miners are dumping GPUs on eBay right now, including the pretty decent GTX 1000 series.

For the last while, I've been running, most of the day:

2 x 1070 at ~120 watts each, for about 1600 GHd/D total.
1 x 1060 at ~105 watts each, for about 500 GHd/D.
3 x 580 at ~ 250 watts each, for about 1200 GHd/D (when running 24/7).

So that's about 400 per card?

[Mark Rose]

Originally Posted by kladner

So that's about 400 per card?

Yes. I have one that's currently thermal throttling a bit. My guess is the thermal pads have dried out or something.

[petrw1]

Luckily it's not a GPU issue. Second hard drive goes into hiding every couple days.

[petrw1]

Originally Posted by petrw1

Luckily it's not a GPU issue. Second hard drive goes into hiding every couple days.

Tech figured I had a bad motherboard and bad hard drive....took almost 9 days but … so far so good.