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[Official] NVIDIA GTX 660TI Owners club - Page 109

post #1081 of 3662
Just some more information to tingle your taste buds fellas. According to the benchmarks @ guru3d, Dual SLI GTX 670 is the same performance as a GTX 690. So theoretically if someone can flash this bios to a 670, That's pretty much running 1x GTX 690 for around $600?

dc5d512e_imageview.png
Check out this review.
http://www.guru3d.com/article/geforce-gtx-670-2-and-3way-sli-review/15

GTX 690 - EVGA
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130781
Price: $1000 USD

GTX 660 TI Power Edition - MSI
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127696
Price: $310 Each = $620 USD
Edited by deception345 - 1/31/13 at 8:01pm
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post #1082 of 3662
post #1083 of 3662
I do not recommend trying to flash a GTX 660 Ti to a 670. The die and PCB on each GPU is physically different (thus the 192-bit vs. 256-bit memory bus), but notice how the memory amount remains the same. That's because one of the 64-bit channels doubles up the amount of physical memory on it, Since this is the case, flashing the card would probably result in bricking it simply because one of the 64-bit memory channels will not have any RAM chips on it.

Do this at your own risk, but I'm willing to bet that there's a 90% chance that you will brick your card.



EDIT: here's a reality check.

On the back of most 660 Ti's, there is a pair of RAM chips. If you turn the card over (and remove the HSF), you will see that there is a pair of RAM chips at the exact same position on the other side of the PCB. That's the 4 chips on a single 64-bit bus. Both of the other 64-bit buses have 2 ram chips a piece, and each RAM chip is 256MB for a total of 2048MB (2GB). However, on a 670, there are only 2 chips per 64-bit bus for a total of 8 chips across a 256-bit memory bus. The cards are physically different.

Observe: back of 660 Ti


Front of 660 Ti




back of 670


front of 670




If you try and BIOS flash your card, you will either lose 512MB of memory, or you will brick the card. Both of which are bad. DO NOT ATTEMPT TO BIOS FLASH YOUR 660 TI!!!!
Edited by Mad Pistol - 2/1/13 at 7:29am
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post #1084 of 3662
I can't attach photos at the moment, but the PCB for both cards is identical according to NewEgg photos--the same exact photo is used for both (as seen from the back). Sometimes NewEgg does show incorrect images for its listed products though.
   
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post #1085 of 3662


Clearly different.
    
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post #1086 of 3662
Oh well that's a shame, It would of been great to have the performance of a 690 with 2 660 TI's, Can't blame a boy for trying rolleyes.gif
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post #1087 of 3662
MAN GOT'S DREAMS !
-ROG
post #1088 of 3662
That's what I get for reading Newegg on my phone then - looked identical swapping between two images! But I wasn't terribly surprised, since my own card also did not match the images Newegg assigned for it when I bought it.
   
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post #1089 of 3662
Is anyone else running SLI w/ the 660 Ti? Just curious what kind of performance and clocks you've been able to get. Also, I'm wondering my 650w PSU is limiting me. I've been able to get +55 core and +500 memory but anything after that is unstable. Temps are holding @ 60C but Heaven crashes at some point and I had a freeze in Crysis 3. Had to back down to +45 and +450. I think I'd rather get the memory a lot higher due to the lower bandwidth.
post #1090 of 3662
Quote:
Originally Posted by Mad Pistol View Post

I do not recommend trying to flash a GTX 660 Ti to a 670. The die and PCB on each GPU is physically different (thus the 192-bit vs. 256-bit memory bus), but notice how the memory amount remains the same. That's because one of the 64-bit channels doubles up the amount of physical memory on it, Since this is the case, flashing the card would probably result in bricking it simply because one of the 64-bit memory channels will not have any RAM chips on it.

Do this at your own risk, but I'm willing to bet that there's a 90% chance that you will brick your card. Warning: Spoiler! (Click to show)
=Warning: Spoiler!]


EDIT: here's a reality check.

On the back of most 660 Ti's, there is a pair of RAM chips. If you turn the card over (and remove the HSF), you will see that there is a pair of RAM chips at the exact same position on the other side of the PCB. That's the 4 chips on a single 64-bit bus. Both of the other 64-bit buses have 2 ram chips a piece, and each RAM chip is 256MB for a total of 2048MB (2GB). However, on a 670, there are only 2 chips per 64-bit bus for a total of 8 chips across a 256-bit memory bus. The cards are physically different.

Observe: back of 660 Ti


Front of 660 Ti




back of 670 Ti


front of 670 Ti


If you try and BIOS flash your card, you will either lose 512MB of memory, or you will brick the card. Both of which are bad. DO NOT ATTEMPT TO BIOS FLASH YOUR 660 TI!!!!
your awesome... thumb.gif
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