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GeForce GTX 465 vs Radeon HD 5850

Intro

The GeForce GTX 465 has a GPU core clock speed of 607 MHz, and the 1024 MB of GDDR5 memory runs at 802 MHz through a 256-bit bus. It also features 352 SPUs, 44 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon HD 5850, which comes with a GPU core clock speed of 725 MHz, and 1024 MB of GDDR5 RAM running at 1000 MHz through a 256-bit bus. It also is made up of 1440(288x5) SPUs, 72 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5850 151 Watts
GeForce GTX 465 200 Watts
Difference: 49 Watts (32%)

Memory Bandwidth

Theoretically, the Radeon HD 5850 should be quite a bit faster than the GeForce GTX 465 overall. (explain)

Radeon HD 5850 128000 MB/sec
GeForce GTX 465 102592 MB/sec
Difference: 25408 (25%)

Texel Rate

The Radeon HD 5850 will be a lot (more or less 95%) better at anisotropic filtering than the GeForce GTX 465. (explain)

Radeon HD 5850 52200 Mtexels/sec
GeForce GTX 465 26708 Mtexels/sec
Difference: 25492 (95%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 5850 is a better choice, but only just. (explain)

Radeon HD 5850 23200 Mpixels/sec
GeForce GTX 465 19424 Mpixels/sec
Difference: 3776 (19%)

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

Check prices at:

Radeon HD 5850

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 465 Radeon HD 5850
Manufacturer nVidia AMD
Year May 2010 September 30, 2009
Code Name GF100 Cypress PRO
Memory 1024 MB 1024 MB
Core Speed 607 MHz 725 MHz
Memory Speed 3208 MHz 4000 MHz
Power (Max TDP) 200 watts 151 watts
Bandwidth 102592 MB/sec 128000 MB/sec
Texel Rate 26708 Mtexels/sec 52200 Mtexels/sec
Pixel Rate 19424 Mpixels/sec 23200 Mpixels/sec
Unified Shaders 352 1440(288x5)
Texture Mapping Units 44 72
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 3000 million 2154 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the 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 maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 465

Amazon.com

Check prices at:

Radeon HD 5850

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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