Finally! GPU wars 2012 - GTX 650 Ti reviews


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Message 1230720 - Posted: 12 May 2012, 0:13:06 UTC

Got both of mine in today. Just going through my setup with Boinc to try and see what snags I may find. Do I need to turn SLi off when crunching?
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Message 1230721 - Posted: 12 May 2012, 0:19:57 UTC - in response to Message 1230720.
Last modified: 12 May 2012, 0:21:46 UTC

Got both of mine in today. Just going through my setup with Boinc to try and see what snags I may find. Do I need to turn SLi off when crunching?

No, my 2 x 460 are fine with SLI enabled. I also know of 3-way SLI 680s that work well.

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Message 1230723 - Posted: 12 May 2012, 0:25:14 UTC - in response to Message 1230720.
Last modified: 12 May 2012, 0:25:41 UTC

Got both of mine in today. Just going through my setup with Boinc to try and see what snags I may find. Do I need to turn SLi off when crunching?


Cuda drivers should see through sli in most cases, but dual GPU card owners (295 & maybe 590) spuriously report sometimes that you need it disabled manually, so driver level control there may not be entirely constant.

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Message 1230724 - Posted: 12 May 2012, 0:25:48 UTC - in response to Message 1230721.
Last modified: 12 May 2012, 0:29:45 UTC


No, my 2 x 460 are fine with SLI enabled. I also know of 3-way SLI 680s that work well.


Thanks, yeah it seems to be doing ok with SLi on. Right now I have them both set to run 4 WU's at a time but may end up adjusting a bit. GPU usage seems to be hovering in the 40's but memory usage reporting is a bit wonky. Can't really tell. G1 is reporting 2048 being used which is the entire memory and G1 reports 41943!! Not sure what to make of it yet, this is the first SLi rig I've ever had.

(BTW this setup is a MONSTER is BF3)

Temps are staying nice too with the setup I got now. Granted the CPU is still under water so that heat isn't there, but temps are hovering around 60C, 70C at spikes with Seti crunching 4x per card. Is this what should be running or should I raise or lower this limit. It kind of looks like it could handle much more, but the memory reporting is off so I'm not sure.


Cuda drivers should see through sli in most cases, but dual GPU card owners (295 & maybe 590) spuriously report sometimes that you need it disabled manually, so driver level control there may not be entirely constant.

jason


Thanks jason. I knew once opun a time I thought I heard you had to turn it off. Seems to be running ok.
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Message 1230819 - Posted: 12 May 2012, 5:20:36 UTC

Outside my edit window for the last post. A GTX 670 does not like 4 tasks at a time. It maxed the memory out and choked the processor levels down. Once moving down to three at a time the gpu's are using 1557mb of vram and the gpu is at 97% utilization. I believe if they had more memory on board (mine are only 2GB) they may be able to handle 4 at a time.

Just passing it along. Anyone else have 670's yet have any feedback on your setup?
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Message 1230877 - Posted: 12 May 2012, 8:27:28 UTC - in response to Message 1230355.

Apple co-founder Woz weighs in against tech giant on price discrimination

Should this question be applied world wide?

I can't speak for 'world wide', but certainly Australians have been gouged on prices (at least for electronics) for a very long time. Even considering the short supply of the GTX 600 series, I don't think it's reasonable that GTX 690s are being sold for AUD1600 when the RRP in the US is USD 1000 (I know with market shortages, they tend to be going for USD 1200...). And 1 AUD is still more than 1 USD at time of writing, and has been since at least December last year.

While not as extreme as the GTX 690 prices, I've seen GTX 680s for AUD 600-700 (USD 500 in US, as I understand it), and GTX 670s for AUD 510+ (USD 400 in US).

I'm not sure where Jason gets his GeForce cards, but suffice to say that there is a hefty premium over whatever Americans are charged, in Australia. :/
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Message 1230904 - Posted: 12 May 2012, 10:41:21 UTC - in response to Message 1230877.

Apple co-founder Woz weighs in against tech giant on price discrimination

Should this question be applied world wide?

I can't speak for 'world wide', but certainly Australians have been gouged on prices (at least for electronics) for a very long time.

Surely not! I only paid $2000 for my dual-floppy drive. Mind you, that was tax-exempt as I was "exporting" it to Antarctica. In 1979...
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Message 1231153 - Posted: 12 May 2012, 19:49:16 UTC
Last modified: 12 May 2012, 19:59:24 UTC

@BENT, I suspect having SLI on is why it is using so much memory. I haven;t gone to more than 2 units yet, but when running 2 only about 480 megs of memory is used on mine.

Edit: Verified, I can easily run 4 on each card. The card with no displays is using just under 1 GB and the one with the displays is using 1100 MB

Edit 2: Although it handles it, one of the units on the display card seems to struggle. I'm dropping back to 2 units per card for a bit to test before I go to 3.

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Message 1231485 - Posted: 13 May 2012, 10:01:15 UTC - in response to Message 1231153.
Last modified: 13 May 2012, 10:02:34 UTC

@BENT, I suspect having SLI on is why it is using so much memory. I haven;t gone to more than 2 units yet, but when running 2 only about 480 megs of memory is used on mine.

Edit: Verified, I can easily run 4 on each card. The card with no displays is using just under 1 GB and the one with the displays is using 1100 MB

Edit 2: Although it handles it, one of the units on the display card seems to struggle. I'm dropping back to 2 units per card for a bit to test before I go to 3.


Nah wasn't it I don't think. I'm running 3 on each card and it for some reason has straightened itself out at 1660mb with 3 units on each card. (6 total) 3 is the max on these card because running just 3 on each card has both of them pegged at 90%+ usage. Have no clue what was happening before.

(Keep in mind here with SLi on the video memory is mirrored between cards, least with games it works that way.)
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Message 1241764 - Posted: 5 Jun 2012, 20:27:42 UTC
Last modified: 5 Jun 2012, 20:28:27 UTC

AnandTech - NVIDIA Announces Retail GeForce GT 640 DDR3

Tom's Hardware review:
Nvidia GeForce GT 640 Review: Cramming Kepler Into GK107

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Message 1242108 - Posted: 6 Jun 2012, 10:16:03 UTC
Last modified: 6 Jun 2012, 10:17:06 UTC

Links for Laptop Crunchers:

AnandTech - NVIDIA GeForce GTX 680M: Kepler GK104 Goes Mobile
geforce.com - Introducing The GeForce GTX 680M Mobile GPU
notebookcheck.net - NVIDIA GeForce GTX 680M
Hot Hardware - Nvidia Announces GeForce GTX 680M, Unveils Obtuse Product SKUs
"In the past, we've criticized AMD for choosing to split the HD 7000 family (both desktop and mobile) between 40nm, rebranded HD 6000 hardware and new 28nm parts built on the company's Graphics Core Next. Unfortunately, Nvidia decided to one-up its competitor in the worst way possible. When AMD split the HD 7000 Mobility family, it did so by model number -- HD 7700 - HD 7900 cards all use 28nm technology, everything below that is built on 40nm.
Nvidia, in contrast, is all over the map. The GTX 680M is a 28nm Kepler part. The GTX 675M and 670M are both 40nm Fermi, while the 660M, 650M, and 640M are all Kepler. The 640M LE family is listed as both Kepler (28nm) and Fermi (40nm) while the 635M, 630M, and 620M include 28nm Fermi options as well as the standard 40nm flavor."

-Hot Hardware


Intel Thunderbolt (you know... in case we're ever able to affordably plug an external GPU into a laptop for crunching)
Intel Thunderbolt Briefing at Computex - New motherboards and devices!

And a couple of GK110 whitepapers for the ubergeeks:)
NVIDIA® KEPLER GK110 NEXT-GENERATION CUDA® COMPUTE ARCHITECTURE
Whitepaper - NVIDIA’s Next Generation CUDA Compute Architecture: Kepler GK110

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Message 1242111 - Posted: 6 Jun 2012, 10:42:39 UTC - in response to Message 1242108.

And a couple of GK110 whitepapers for the ubergeeks:)

Hyper-Q looks very promising.
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Message 1245758 - Posted: 14 Jun 2012, 6:15:31 UTC

Do we know when the 650 and 660 GPU's will be released?

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Message 1245764 - Posted: 14 Jun 2012, 6:34:50 UTC - in response to Message 1245758.

Do we know when the 650 and 660 GPU's will be released?


I have heard rumors of the 25th for the 660.
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Message 1245801 - Posted: 14 Jun 2012, 8:21:57 UTC - in response to Message 1245764.

Do we know when the 650 and 660 GPU's will be released?


I have heard rumors of the 25th for the 660.

That would be good, I have one son and friend of other son, requiring new GPU's mainly games players, but cannot afford 670 or better. At right price I might just replace mine if I can do it with present PSU.

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Message 1245814 - Posted: 14 Jun 2012, 10:57:28 UTC - in response to Message 1245758.
Last modified: 14 Jun 2012, 11:25:32 UTC

Do we know when the 650 and 660 GPU's will be released?


Nobody's got a clue!:) They don't even know if it's going to be a 660 AND a 660Ti, or just one of the two. The Acer leak about the 25th could be an OEM unfortunately. Hope I'm wrong... A few others are claiming an August timeframe.

One thing everybody seems to agree on is the $300 price tag. So maybe ~260 quid?

Edit: If you are talking about the PC with GT 240 in it, that card is 70W. So you might want to have a look at the GT 640 which is already out.

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Message 1245820 - Posted: 14 Jun 2012, 11:18:17 UTC - in response to Message 1245801.

At right price I might just replace mine if I can do it with present PSU.

The new series of GPUs use considerably less power than the previous series.
From memory, at full load the GTX680 uses 100W less than the GTX580.

Ah, here we go,

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Message 1246074 - Posted: 14 Jun 2012, 19:57:02 UTC - in response to Message 1245814.



Edit: If you are talking about the PC with GT 240 in it, that card is 70W. So you might want to have a look at the GT 640 which is already out.



I'm fooling around with a GT640 now.

My advice is to hold-off a little while and let me get some good numbers. I've got numbers, but I have little confidence in them.

Don't quote me, but it initially looked like a single, unexceptional, WU run under the Lunatics' app was completing in the 30 minute range, give-or-take 10%.

The GT640 is *not* going to blow anyone away, even after some setup optimization.

I'm not saying it's a bad card. I'm saying it isn't a miracle.

First impression is that it will replace the GT240 and might be as much as 25% better at crunching, but that "25%" number is subject to broad revision.

I've been changing some things on it and I've pushed it too hard. <I have not tried overclocking it; that's not the setting I'm fooling-with> It's been producing errors. I've just dropped-back from 2 WUs at a time to 1 WU at a time. If I continue to get errors, I'll back-off something else.

If you go looking at my machines, just understand that whatever you see there for the GT640 is subject to a lot of change.

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Message 1246304 - Posted: 15 Jun 2012, 5:07:20 UTC - in response to Message 1245814.
Last modified: 15 Jun 2012, 5:15:56 UTC

Do we know when the 650 and 660 GPU's will be released?


Nobody's got a clue!:) They don't even know if it's going to be a 660 AND a 660Ti, or just one of the two. The Acer leak about the 25th could be an OEM unfortunately. Hope I'm wrong... A few others are claiming an August timeframe.

One thing everybody seems to agree on is the $300 price tag. So maybe ~260 quid?

Edit: If you are talking about the PC with GT 240 in it, that card is 70W. So you might want to have a look at the GT 640 which is already out.


Yes and no. The primary upgrade is to the E6600 which has an old 7950 card in it. That card is rated at 82W, but the computer has a 650W corsair PSU in it so can take a more powerful card but the owner is cash limited, like he cannot afford the price his brother spent on 670.

The friends computer has 2 * 8800GTX's in SLI mode, but that was funded by parents when at University, he now has to fund own upgrade, which he say's is £250 max.

My computer with the GT 240 can supply more power. Since I retired it has gone from four HDD's down to SSD plus 2.5" HDD. I've also taken out the DVD drive and the card reader, and now use ext USB blue ray drive and SD micro cards with USB adapter, if needed. So there has to be at least another 100W available. So a card at ~150W might be on the cards.

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Message 1246475 - Posted: 15 Jun 2012, 16:54:05 UTC - in response to Message 1246074.



I'm fooling around with a GT640 now.

My advice is to hold-off a little while and let me get some good numbers. I've got numbers, but I have little confidence in them.

Don't quote me, but it initially looked like a single, unexceptional, WU run under the Lunatics' app was completing in the 30 minute range, give-or-take 10%.

The GT640 is *not* going to blow anyone away, even after some setup optimization.

I'm not saying it's a bad card. I'm saying it isn't a miracle.

First impression is that it will replace the GT240 and might be as much as 25% better at crunching, but that "25%" number is subject to broad revision.

I've been changing some things on it and I've pushed it too hard. <I have not tried overclocking it; that's not the setting I'm fooling-with> It's been producing errors. I've just dropped-back from 2 WUs at a time to 1 WU at a time. If I continue to get errors, I'll back-off something else.

If you go looking at my machines, just understand that whatever you see there for the GT640 is subject to a lot of change.


Please post some more details when more tasks have finished. 30 minutes is a bit disappointing. My GT240 (GDDR5) does shorties in 5 minutes and normal units in about 20 minutes. I was considering the GT640 as an upgrade, but I guess I'll have to wait for the GTX650.


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