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GeForce GTS 450 vs GeForce GTX 460

Intro

The GeForce GTS 450 features a GPU core clock speed of 783 MHz, and the 512 MB of GDDR5 RAM runs at 902 MHz through a 128-bit bus. It also is comprised of 192 SPUs, 32 Texture Address Units, and 16 ROPs.

Compare those specs to the GeForce GTX 460, which uses a 40 nm design. nVidia has set the core frequency at 675 MHz. The GDDR5 RAM works at a frequency of 900 MHz on this card. It features 336 SPUs as well as 56 Texture Address Units and 24 ROPs.

(No game benchmarks for this combination yet.)

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

The GeForce GTX 460 should theoretically perform much faster than the GeForce GTS 450 overall. (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 (approximately 51%) better at 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 is a lot (approximately 29%) better at full screen anti-aliasing than the GeForce GTS 450, and also will be able to handle higher resolutions without slowing down too much. (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

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce GTS 450

Amazon.com

Other US-based stores

GeForce GTX 460

Amazon.com

Other US-based stores

Specifications

Model GeForce GTS 450 GeForce GTX 460
Manufacturer nVidia nVidia
Year September 2010 July 2010
Code Name GF106 GF104
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe x16
Memory 512 MB 768 MB
Core Speed 783 MHz 675 MHz
Shader Speed 1566 MHz 1350 MHz
Memory Speed 902 MHz (3608 MHz effective) 900 MHz (3600 MHz effective)
Unified Shaders 192 336
Texture Mapping Units 32 56
Render Output Units 16 24
Bus Type GDDR5 GDDR5
Bus Width 128-bit 192-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 106 watts 150 watts
Shader Model 5.0 5.0
Bandwidth 57728 MB/sec 86400 MB/sec
Texel Rate 25056 Mtexels/sec 37800 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 16200 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics 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 number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units 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 lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

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