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Number crunching :
Thoughts on this card, Deal or more likely Crapshoot?
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Cruncher-American Send message Joined: 25 Mar 02 Posts: 1513 Credit: 370,893,186 RAC: 340 |
Maybe the seller (or his supplier) got some reject gpu chips? |
HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
Huh, nope, it says 192 Unified, whatever that means. I wonder if the Direct Compute version is limited by the OS. I noticed the GPU is also listing OpenCL 1.1, GeForce GTX 770 (3072MB) driver: 364.72 OpenCL: 1.1, instead of 1.2 & that driver does support 1.2. As does nearly ever NV GPU since the 500 series. The only differences I see between the GTX 760 & the GTX 760 192-bit version are lower clocks & a reduced memory interface. If the GPU does only have 192 shaders and has a default clock of 790. It makes me think it might be a GT 720 chip instead. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
Gamboleer Send message Joined: 3 Jun 06 Posts: 29 Credit: 12,391,598 RAC: 0 |
I see the fan type is æ•£çƒé£Žæ‰‡. I've always liked æ•£çƒé£Žæ‰‡ fans. |
Al Send message Joined: 3 Apr 99 Posts: 1682 Credit: 477,343,364 RAC: 482 |
WHAT??? I thought they had é£Žæ‰‡æ•£çƒ fans in them, not the crappy æ•£çƒé£Žæ‰‡ style fans. I've been screwed! :-O |
Al Send message Joined: 3 Apr 99 Posts: 1682 Credit: 477,343,364 RAC: 482 |
Well, this will be a test to see if my setup on Imagur works, if not, on to the next one. Here are the pics of the screenshot of the GPUZ screen on this card: |
HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
Based on the tasks taking ~40min when you were running two at once I think these cards might really only have 192 shaders. Given many GTX 750 Ti GPUs will do two at a time in about 25min with 640 shaders. Have you checked power consumption with the GPU running vs not? If they pull 130-170w like a GTX 760 or GTX 770 does then they might not be very efficient. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
Kiska Send message Joined: 31 Mar 12 Posts: 302 Credit: 3,067,762 RAC: 0 |
It truly looks like this card is GT720 instead of a 770 judging from GPU-Z |
Al Send message Joined: 3 Apr 99 Posts: 1682 Credit: 477,343,364 RAC: 482 |
Wow, this just went from interesting to unfortunate. Well, I knew from the begininng that it was a crapshoot, and turns out that it came up craps. Oh well, it was interesting, could have went the other was as well, but like they and I very often say, if it seems too good to be true, it probably is. C'est la vie! |
HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
Wow, this just went from interesting to unfortunate. Well, I knew from the begininng that it was a crapshoot, and turns out that it came up craps. Oh well, it was interesting, could have went the other was as well, but like they and I very often say, if it seems too good to be true, it probably is. C'est la vie! It seemed kind of fishy up front, but sometimes there are OK things from the Chinese knock off market. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
BetelgeuseFive Send message Joined: 6 Jul 99 Posts: 158 Credit: 17,117,787 RAC: 19 |
It truly looks like this card is GT720 instead of a 770 judging from GPU-Z According to the Wiki there is no such thing as a GT720 with a GK104 chip: https://en.wikipedia.org/wiki/GeForce_700_series#GeForce_700_.287xx.29_series GK104 + 192-bit seems to point towards a GTX-760 192-bit, but that should have more shaders and better performance ... |
Al Send message Joined: 3 Apr 99 Posts: 1682 Credit: 477,343,364 RAC: 482 |
This seems kind of like a frankenstein card that someone has whipped together? Wierd stuff, for certain, and the performance isn't all that great either. Def seems like kind of a kludge card. |
HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
This seems kind of like a frankenstein card that someone has whipped together? Wierd stuff, for certain, and the performance isn't all that great either. Def seems like kind of a kludge card. Since everything fits the 760 192-bit GPU specs except the cores. It is likely these cards were built from chips with a large number of dead/non working cores. It looks like you got a few of these. Do they all show 192 shaders? Using silicone that doesn't meet all the specs for the intended product in a lower end product is a legitimate business practice. It is why you will often see different level products with the same base silicone. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
Al Send message Joined: 3 Apr 99 Posts: 1682 Credit: 477,343,364 RAC: 482 |
Hal, if I remember correctly, they both showed the same specs when I ran it on both machines. You are right, it's just that they are labeled as 770's, but clearly stated 192 bit in the items info before I bought them, so it was definately a buyer beware. I really don't have buyers remorse. Do I wish they had been home runs? Sure. But if I wanted a sure thing, I could have bought a couple EVGA 750's from Newegg when they were $99 on sale (after rebate) about a month or so ago. It's turned out to be just an interesting experiment, and a learning experience for anyone who's been following this thread. :-) |
jason_gee Send message Joined: 24 Nov 06 Posts: 7489 Credit: 91,093,184 RAC: 0 |
Awww, Wun Hung Low brand loses another customer, and many Potential future ones :( "Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions. |
Al Send message Joined: 3 Apr 99 Posts: 1682 Credit: 477,343,364 RAC: 482 |
LOL Jason, you are much too funny. Just wanted to let you know that. :-p |
jason_gee Send message Joined: 24 Nov 06 Posts: 7489 Credit: 91,093,184 RAC: 0 |
Cheers Al. I try to keep it upbeat on occasion, lol. "Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions. |
spitfire_mk_2 Send message Joined: 14 Apr 00 Posts: 563 Credit: 27,306,885 RAC: 0 |
My GTX 750Ti SC: |
Al Send message Joined: 3 Apr 99 Posts: 1682 Credit: 477,343,364 RAC: 482 |
Hmm. So a quick comparison of specs shows I have 3540M transistors, you have 1870M, I have 192 shaders, you have 640. You have 18.8 Gpixel fill rate, I have 20.8, my bandwidth is 90.7GB/s, yours is 86.4. My default clock is 790MHz, yours is 1176, and my memory is 940MHZ default, yours is 1350. Of course, my die size is 294mm2, yours is 148, so less than half the die size, and your release date is about a year newer than mine. I think it's possible as mentioned above that this was one that had a heckuva lot of bad transistors on it, so they made it into whatever they could, and here is what we ended up with. No idea why the shaders are so whacked, and the bus width is a bummer too, compared to the 'real' 770, but it is a set up from yours. Overall, I think I nailed it pretty good: Frankenstein. Not sure about the Cuda cores, are those the shaders? Thanks for posting that as a comparison, just shows to go you what I've got here. |
spitfire_mk_2 Send message Joined: 14 Apr 00 Posts: 563 Credit: 27,306,885 RAC: 0 |
Hmm. So a quick comparison of specs shows I have 3540M transistors, you have 1870M, I have 192 shaders, you have 640. You have 18.8 Gpixel fill rate, I have 20.8, my bandwidth is 90.7GB/s, yours is 86.4. My default clock is 790MHz, yours is 1176, and my memory is 940MHZ default, yours is 1350. Of course, my die size is 294mm2, yours is 148, so less than half the die size, and your release date is about a year newer than mine. Keep in mind that they can edit the info stored on the card. The BIOS chip of the card. So while some info on the card can not be tempered with and GPU-z reports it faithfully, the other info can be changed by the seller. |
Al Send message Joined: 3 Apr 99 Posts: 1682 Credit: 477,343,364 RAC: 482 |
Ooooh.. didn't know that. Thanks! Bstrds! lol |
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