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GeForce GTS 450 vs GeForce GTX 460

Intro

The GeForce GTS 450 comes with core clock speeds of 783 MHz on the GPU, and 902 MHz on the 512 MB of GDDR5 RAM. It features 192 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Compare all that to the GeForce GTX 460, which comes with a core clock frequency of 675 MHz and a GDDR5 memory frequency of 900 MHz. It also makes use of a 192-bit bus, and makes use of a 40 nm design. It features 336 SPUs, 56 TAUs, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 106 Watts
GeForce GTX 460 150 Watts
Difference: 44 Watts (42%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 should be 50% quicker than the GeForce GTS 450 in general, because of its greater bandwidth. (explain)

GeForce GTX 460 86400 MB/sec
GeForce GTS 450 57728 MB/sec
Difference: 28672 (50%)

Texel Rate

The GeForce GTX 460 is a lot (about 51%) faster with regards to texture filtering than the GeForce GTS 450. (explain)

GeForce GTX 460 37800 Mtexels/sec
GeForce GTS 450 25056 Mtexels/sec
Difference: 12744 (51%)

Pixel Rate

The GeForce GTX 460 should be quite a bit (about 29%) more effective at AA than the GeForce GTS 450, and should be capable of handling higher screen resolutions better. (explain)

GeForce GTX 460 16200 Mpixels/sec
GeForce GTS 450 12528 Mpixels/sec
Difference: 3672 (29%)

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

Display Prices

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GeForce GTS 450

Amazon.com

GeForce GTX 460

Amazon.com

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

Display Specifications

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Model GeForce GTS 450 GeForce GTX 460
Manufacturer nVidia nVidia
Year September 2010 July 2010
Code Name GF106 GF104
Memory 512 MB 768 MB
Core Speed 783 MHz 675 MHz
Memory Speed 3608 MHz 3600 MHz
Power (Max TDP) 106 watts 150 watts
Bandwidth 57728 MB/sec 86400 MB/sec
Texel Rate 25056 Mtexels/sec 37800 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 16200 Mpixels/sec
Unified Shaders 192 336
Texture Mapping Units 32 56
Render Output Units 16 24
Bus Type GDDR5 GDDR5
Bus Width 128-bit 192-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 1950 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

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