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Based on the Fermi third-generation Streaming Multiprocessor (SM) architecture, the GeForce GTX 460 boasts 336 CUDA cores, which is almost twice the shader power of the GT200 architecture used by the GeForce GTX 260. Interestingly this means that the GeForce GTX 460 has just 4.5% fewer cores when compared to the GTX 465.
What’s more interesting is the fact that the GeForce GTX 460 has the same number of TMUs (Texture Mapping Units) as the GeForce GTX 470 with 56 in total, which is 27% more than the GeForce GTX 465. The Inno3D GeForce GTX 460 (768MB) version features 24 ROPs (Raster Operations Pipelines), while the 1024MB versions will carry 32 like the GeForce GTX 465.
The graphics clock speed for fixed function units is 675MHz, while the CUDA Cores operate at a more aggressive 1350MHz. This means that the fixed function units and CUDA Cores are clocked 11% higher on the GeForce GTX 460 than they are on the GTX 465 and GTX 470 graphics cards.
There are two versions of the GeForce GTX 460, one teamed with 1024MB of GDDR5 memory and a smaller cheaper version with just 768MB of GDDR5 memory. Both are clocked at 900MHz (3600MHz DDR). While they both share the same operating frequency, the 768MB cards only feature a 192-bit wide memory bus, while the larger 1024MB cards get a bigger 256-bit bus. This means that while the 1024MB cards will have a peak memory bandwidth of 115.2GB/s, the smaller 768MB cards are limited to 86.4GB/s, a 25% bandwidth reduction. It is interesting to note that the larger 1024MB version of the GeForce GTX 460 will actually have 12% more bandwidth at its disposal when compared to the more expensive GeForce GTX 465.
Unlike the GeForce GTX 465, the Thermal Design Power (TDP) rating of the GeForce GTX 460 is very reasonable, with the 1024MB version rated at 160 watts and the 768MB version 150 watts. This makes the 1024MB cards 20% more fuel efficient when compared to the GeForce GTX 465 and 9% more efficient when compared to the Radeon HD 5830.
Other than the PCI Express slot, the GeForce GTX 460 draws in power through a pair of external PCI Express power connectors. The GTX 460 requires dual 6-pin connectors, which is the same configuration used by the Radeon HD 5830. The GeForce GTX 460 also features a single SLI bridge connector allowing it to be paired with another graphics card. |
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Finder |
Posted on: 07/12/2010 03:15 AM
I read the first few pages and then jumped to the overclocking results ... all I can say is OMG those things rock. |
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Russo |
Posted on: 07/12/2010 04:25 AM
Its a joke that they ever released the GeForce GTX 465, seriously Nvidia's naming scheme is BS! |
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Horribleron Posts: 13 Joined: 2010-03-26 |
Posted on: 07/12/2010 04:57 AM
Nice to see the green guys get it right. I suspect that the GTX 465 will be short lived now. In fact, I wouldn't be surprised if the entire GF100 based line disappears and is replaced with a dual GF104 based card. I was thinking of getting a 5850 soon but the 1GB GTX460 has my eye now. |
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Zergling |
Posted on: 07/12/2010 09:46 AM
Awesome review well done, one of the best I have read so far! |
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Horribleron Posts: 13 Joined: 2010-03-26 |
Posted on: 07/13/2010 03:15 AM
Another thing..these GF104 products being released now only have 336 of 384 cores enabled. I think we can expect to see a card with all 384 cores turned on in the future. In further reading today I could be wrong in saying the GF100 will disappear but you may only see it in the GTX480 and NVidia's high end workstation products as the GF100 has additional features catering to computing. They stripped the GF104 of features not needed for gaming and made a lean and mean pure graphics card. Due to the GF104's superior clock speeds a 384 core model could likely match the GF100 based GTX470 so I suspect the GTX470 and GTX465 will disappear soon. I think I'm going to hold out and see what the 384 core (GTX475?) card can do. |
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ProX |
Posted on: 07/14/2010 09:53 AM
@ Horribleron - I agree, it will be interesting to see when and if Nvidia will release a new version of the 480 also. I am also keen to see what ATI do as well. |
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Chootia |
Posted on: 07/21/2010 10:09 PM
Wow I just checked out the results and damn those things are fast. When I saw the name GTX 460 Im thought meh, but then I saw the results, very strange. |
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Horribleron Posts: 13 Joined: 2010-03-26 |
Posted on: 07/28/2010 04:15 AM
Read a article today on Fudzilla that confirms that a 384 core version is on the way once they run out of GTX470 models to sell. Likely name is the GTX475. Should be a spankin fast card. But will NVidia be around to support it long? Apple gave them the boot today with all of the new Apple systems and went with ATI. That's a HUGH loss of business. |