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GeForce GTX 465 vs GeForce GTX 650

Intro

The GeForce GTX 465 has core speeds of 607 MHz on the GPU, and 802 MHz on the 1024 MB of GDDR5 memory. It features 352 SPUs along with 44 Texture Address Units and 32 ROPs.

Compare those specs to the GeForce GTX 650, which uses a 28 nm design. nVidia has clocked the core speed at 1058 MHz. The GDDR5 memory is set to run at a speed of 1250 MHz on this particular card. It features 384 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GTX 465 200 Watts
Difference: 136 Watts (213%)

Memory Bandwidth

The GeForce GTX 465 should theoretically be quite a bit faster than the GeForce GTX 650 in general. (explain)

GeForce GTX 465 102592 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 22592 (28%)

Texel Rate

The GeForce GTX 650 should be much (about 27%) faster with regards to texture filtering than the GeForce GTX 465. (explain)

GeForce GTX 650 33856 Mtexels/sec
GeForce GTX 465 26708 Mtexels/sec
Difference: 7148 (27%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 465 is superior to the GeForce GTX 650, not by a very large margin though. (explain)

GeForce GTX 465 19424 Mpixels/sec
GeForce GTX 650 16928 Mpixels/sec
Difference: 2496 (15%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce GTX 465

Amazon.com

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GeForce GTX 650

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 465 GeForce GTX 650
Manufacturer nVidia nVidia
Year May 2010 September 2012
Code Name GF100 GK107
Memory 1024 MB 1024 MB
Core Speed 607 MHz 1058 MHz
Memory Speed 3208 MHz 5000 MHz
Power (Max TDP) 200 watts 64 watts
Bandwidth 102592 MB/sec 80000 MB/sec
Texel Rate 26708 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 19424 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 352 384
Texture Mapping Units 44 32
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 3000 million 1300 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTX 465

Amazon.com

Check prices at:

GeForce GTX 650

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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