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GeForce GTX 275 vs Radeon HD 5830

Intro

The GeForce GTX 275 uses a 55 nm design. nVidia has set the core frequency at 633 MHz. The GDDR3 memory is set to run at a frequency of 1134 MHz on this particular card. It features 240 SPUs as well as 80 TAUs and 28 Rasterization Operator Units.

Compare those specs to the Radeon HD 5830, which has clock speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 1120(224x5) SPUs as well as 56 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830 175 Watts
GeForce GTX 275 219 Watts
Difference: 44 Watts (25%)

Memory Bandwidth

Theoretically, the Radeon HD 5830 should be a little bit faster than the GeForce GTX 275 overall. (explain)

Radeon HD 5830 128000 MB/sec
GeForce GTX 275 127008 MB/sec
Difference: 992 (1%)

Texel Rate

The GeForce GTX 275 will be a small bit (about 13%) faster with regards to texture filtering than the Radeon HD 5830. (explain)

GeForce GTX 275 50640 Mtexels/sec
Radeon HD 5830 44800 Mtexels/sec
Difference: 5840 (13%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 275 is a better choice, by a large margin. (explain)

GeForce GTX 275 17724 Mpixels/sec
Radeon HD 5830 12800 Mpixels/sec
Difference: 4924 (38%)

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 275

Amazon.com

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Radeon HD 5830

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 275 Radeon HD 5830
Manufacturer nVidia AMD
Year April 9, 2009 February 25, 2010
Code Name G200b Cypress LE
Memory 896 MB 1024 MB
Core Speed 633 MHz 800 MHz
Memory Speed 2268 MHz 4000 MHz
Power (Max TDP) 219 watts 175 watts
Bandwidth 127008 MB/sec 128000 MB/sec
Texel Rate 50640 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 17724 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 240 1120(224x5)
Texture Mapping Units 80 56
Render Output Units 28 16
Bus Type GDDR3 GDDR5
Bus Width 448-bit 256-bit
Fab Process 55 nm 40 nm
Transistors 1400 million 2154 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTX 275

Amazon.com

Check prices at:

Radeon HD 5830

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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