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GeForce GTX 275 vs Radeon HD 5830

Intro

The GeForce GTX 275 has a GPU core speed of 633 MHz, and the 896 MB of GDDR3 RAM runs at 1134 MHz through a 448-bit bus. It also is comprised of 240 Stream Processors, 80 Texture Address Units, and 28 ROPs.

Compare all that to the Radeon HD 5830, which uses a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this model. It features 1120(224x5) SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

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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

In theory, the Radeon HD 5830 should be a small 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 is a bit (approximately 13%) faster with regards to anisotropic 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 running with high levels of AA is important to you, then the GeForce GTX 275 is superior to the Radeon HD 5830, by far. (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

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.

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: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's 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 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 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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