It finally broke 1000RAC!! rather impressive IMO compared to what the Intel Atom 330 was spitting out years ago. turns out the GPUZ shoing how gpu usage maybe have just been a glitch with gpuz. since i start it up when needed now, i seen it showing 0% at all.

now that i see a replacement for the GT640 Rev2 cards, the new name but an older GK107-452-A2. being used on NV's newly relased GT740, comparing specs of it vs the GT640 rev1. TDP is down, GT640 rev 1 at 75watts, the GT740 at 64watts, both with Gddr5 ram. the GT740 is still around $80-100 look at them online, you can get the new GT740 with up to 4gb of ram. though from what im seeing, SETI GPU wu's dont use that much ram. someone talked about running more then one on the GPU, still havent figured out how to do this. though on my current GT630 rev 2 you may not want to, due to im still seeing about a 83-87% usage on the gpu. with the higher number of TMU and ROP's on the GT740, i wonder what it might do.


Cores TMU ROP SMX TDP
GT640 rev 1 384 32 16 2 75
GT740 rev 1 384 32 16 2 64

cost of the new GT740 is near what a GT640 gDDR5 costs. like some have pointed out to me at another forums why not get the GTX750 at that point it doesnt cost that much more. though looking at the TDP, it is quite a bit higher vs what im looking at.

It finally broke 1000RAC!!

Is it still climbing? If not, that is about 40RAC/TDP watt. I am getting 199RAC/TDP watt on my GTX750Ti cards. My ACTUAL power use is 40-45 watts averaged over one second (GPU-Z numbers).

Newegg just had them on sale last week for US$129 after a rebate.

It finally broke 1000RAC!!

Is it still climbing? If not, that is about 40RAC/TDP watt. I am getting 199RAC/TDP watt on my GTX750Ti cards. My ACTUAL power use is 40-45 watts averaged over one second (GPU-Z numbers).

Newegg just had them on sale last week for US$129 after a rebate.

cheapest one listed on newegg is the evga atm with a 10$ mir. what is the listed % gpuz shows? as gpuz does not show TDP of the card but in %. it shoud be giving your % of tdp going off of 60watts for the card.

it does look like the GT630 has not topped out yet for rac, 1k to me is a milestone! :)

It will go quite a bit higher yet :)

My box is up up to 2,450 now, and still climbing. That's with a Q6600 CPU that's putting on some useful work as well,

It's never going to be a mega cruncher, but if you want "cheap n cheerful" it's a good card. Throw one in any old PC with a normal PSU, you get a useful cruncher and mid range game PC, for US$50.

Ian

I have a GT620 2GB, 810 MHz version in my office PC (called CHEMPC on my list). The PC has a seti RAC of 11,500. That comes from running 2AP at a time on the GT630 (5 hours each) and 2 AP on the quad core CPU (5.5 hours each). That leaves two cores free to feed the GPUs (there is an INTEL GPU running Collatz as well) and to service my needs. With these settings the GPU runs with 99% usage and at 65 oC (at 1.30PM here) in a very warm office with a south facing window.

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what is the listed % gpuz shows? as gpuz does not show TDP of the card but in %. it shoud be giving your % of tdp going off of 60watts for the card.

You are absolutely correct. When I take the 60 watt TDP times the 65-75% power usage number from GPU-Z, I got about 40-45 watts of actual power usage. Okay, 39-45 watts then ;-)

[EDIT] I don't use the CPU for SETI crunching work, only to feed the GPUs, since I give all the free CPU time to Rosetta (which does not have a GPU version).

its still climbing! just for the card only,its now up to 1,292rac. now talking about power usage, since this card doesnt allow power usage via software. to figure my rac/watt all can use is listed nv spec of 25watts. if i had a kill-o-watt device i could try to figure it out. looking at whats been posted for % of tdp so far. even assuming 70-80% tdp usage, 17.5-20watts on the card, which would then change the rac/watt to 73.8rac - 64.6rac. that would be using the current rac listing of 1292r/17.5w and 1292r/20w. if the numbers are even close to power usage, to me thats even better.

its still climbing! just for the card only,its now up to 1,292rac. now talking about power usage, since this card doesnt allow power usage via software. to figure my rac/watt all can use is listed nv spec of 25watts. if i had a kill-o-watt device i could try to figure it out. looking at whats been posted for % of tdp so far. even assuming 70-80% tdp usage, 17.5-20watts on the card, which would then change the rac/watt to 73.8rac - 64.6rac. that would be using the current rac listing of 1292r/17.5w and 1292r/20w. if the numbers are even close to power usage, to me thats even better.

If you are leaving GPUz open in the background you change the display for GPU load to "average" instead of "current". Then you could base your power usage off of that value. Since my HD 6370m GPU runs around 96% I just figure it's full TDP rating of 11w as power usage. It may only be rated at 120 GFLOPS but it sure does seem to be making use of them.

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SETI@home classic workunits: 93,865 CPU time: 863,447 hours
Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[

i truely wonder where this thing is going to top out! currently at 1,491 RAC!! woots!!

to the others that mentioned their RAC, those are total for your whole computer. im simply looking at a single GPU numbers, no cpu work at all for seti.

GPU load has no correlation to TDP, without a TDP monitor its not going to be accurate. since the part of the GPU being used is going to be different. The TDP normal is a full load of the entire core not just certain sections. i will admit im not sure how much of the core it self is being used for GPGPU work for seti. i just dont see the same parts being used as if this was a game or other demanding 3D app.

i truely wonder where this thing is going to top out! currently at 1,491 RAC!! woots!!

to the others that mentioned their RAC, those are total for your whole computer. im simply looking at a single GPU numbers, no cpu work at all for seti.

GPU load has no correlation to TDP, without a TDP monitor its not going to be accurate. since the part of the GPU being used is going to be different. The TDP normal is a full load of the entire core not just certain sections. i will admit im not sure how much of the core it self is being used for GPGPU work for seti. i just dont see the same parts being used as if this was a game or other demanding 3D app.

the numbers from the stat sites indicate it will be around 1800 or so.

TDP stand for Thermal Design Power. Not the actual power consumption. With the TDP value being "worst case scenario" it is often safe to just use the TDP value for power usage.
However if you want to know power consumption you need to monitor the PCIe bus & the PCIe 12v connector at the same time like this.
If you have a UPS with a power indicator, or an AC watt meter, you could use that to indirectly see the difference between idle & load on your components. Which is is generally good enough.

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SETI@home classic workunits: 93,865 CPU time: 863,447 hours
Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[

try hal, as of right now it is at 1792RAC. i hope it goes higher then 1800, 2k is my hope.

Probably about right.

My machine has settled down to about 4500 with a Q6000 and a new GT630. I haven't measured power use, but the machine was pulling about 90w from with wall with just the CPU, and TDP of the card is only 25w. So I'm guessing not much over 100w to get that RAC.

Ian

its sitting at 1799 RAC.