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GeForce GTX 460 (OEM) vs Radeon HD 6450 (OEM) 1GB

Intro

The GeForce GTX 460 (OEM) has a GPU core clock speed of 650 MHz, and the 1024 MB of GDDR5 memory runs at 850 MHz through a 256-bit bus. It also is comprised of 336 SPUs, 56 TAUs, and 32 ROPs.

Compare those specifications to the Radeon HD 6450 (OEM) 1GB, which comes with a core clock frequency of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also uses a 64-bit memory bus, and uses a 40 nm design. It is made up of 160 SPUs, 8 Texture Address Units, and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB 31 Watts
GeForce GTX 460 (OEM) 150 Watts
Difference: 119 Watts (384%)

Memory Bandwidth

Performance-wise, the GeForce GTX 460 (OEM) should theoretically be quite a bit superior to the Radeon HD 6450 (OEM) 1GB in general. (explain)

GeForce GTX 460 (OEM) 108800 MB/sec
Radeon HD 6450 (OEM) 1GB 28800 MB/sec
Difference: 80000 (278%)

Texel Rate

The GeForce GTX 460 (OEM) is quite a bit (about 507%) better at AF than the Radeon HD 6450 (OEM) 1GB. (explain)

GeForce GTX 460 (OEM) 36400 Mtexels/sec
Radeon HD 6450 (OEM) 1GB 6000 Mtexels/sec
Difference: 30400 (507%)

Pixel Rate

The GeForce GTX 460 (OEM) will be quite a bit (more or less 593%) more effective at full screen anti-aliasing than the Radeon HD 6450 (OEM) 1GB, and also capable of handling higher resolutions better. (explain)

GeForce GTX 460 (OEM) 20800 Mpixels/sec
Radeon HD 6450 (OEM) 1GB 3000 Mpixels/sec
Difference: 17800 (593%)

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 460 (OEM)

Amazon.com

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Radeon HD 6450 (OEM) 1GB

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.

Specifications

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Model GeForce GTX 460 (OEM) Radeon HD 6450 (OEM) 1GB
Manufacturer nVidia AMD
Year October 2010 February 2011
Code Name GF104 Caicos
Memory 1024 MB 1024 MB
Core Speed 650 MHz 750 MHz
Memory Speed 3400 MHz 3600 MHz
Power (Max TDP) 150 watts 31 watts
Bandwidth 108800 MB/sec 28800 MB/sec
Texel Rate 36400 Mtexels/sec 6000 Mtexels/sec
Pixel Rate 20800 Mpixels/sec 3000 Mpixels/sec
Unified Shaders 336 160
Texture Mapping Units 56 8
Render Output Units 32 4
Bus Type GDDR5 GDDR5
Bus Width 256-bit 64-bit
Fab Process 40 nm 40 nm
Transistors 1950 million 370 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 460 (OEM)

Amazon.com

Check prices at:

Radeon HD 6450 (OEM) 1GB

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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