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GeForce GTX 275 vs Radeon HD 6850

Intro

The GeForce GTX 275 features a core clock frequency of 633 MHz and a GDDR3 memory speed of 1134 MHz. It also makes use of a 448-bit bus, and uses a 55 nm design. It is made up of 240 SPUs, 80 TAUs, and 28 Raster Operation Units.

Compare that to the Radeon HD 6850, which has a clock frequency of 775 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 256-bit memory bus, and makes use of a 40 nm design. It features 960 SPUs, 48 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850 127 Watts
GeForce GTX 275 219 Watts
Difference: 92 Watts (72%)

Memory Bandwidth

Theoretically, the Radeon HD 6850 should be a small bit faster than the GeForce GTX 275 overall. (explain)

Radeon HD 6850 128000 MB/sec
GeForce GTX 275 127008 MB/sec
Difference: 992 (1%)

Texel Rate

The GeForce GTX 275 is much (more or less 36%) more effective at texture filtering than the Radeon HD 6850. (explain)

GeForce GTX 275 50640 Mtexels/sec
Radeon HD 6850 37200 Mtexels/sec
Difference: 13440 (36%)

Pixel Rate

The Radeon HD 6850 should be quite a bit (approximately 40%) better at full screen anti-aliasing than the GeForce GTX 275, and should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 6850 24800 Mpixels/sec
GeForce GTX 275 17724 Mpixels/sec
Difference: 7076 (40%)

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 6850

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 6850
Manufacturer nVidia AMD
Year April 9, 2009 October 2010
Code Name G200b Barts Pro
Memory 896 MB 1024 MB
Core Speed 633 MHz 775 MHz
Memory Speed 2268 MHz 4000 MHz
Power (Max TDP) 219 watts 127 watts
Bandwidth 127008 MB/sec 128000 MB/sec
Texel Rate 50640 Mtexels/sec 37200 Mtexels/sec
Pixel Rate 17724 Mpixels/sec 24800 Mpixels/sec
Unified Shaders 240 960
Texture Mapping Units 80 48
Render Output Units 28 32
Bus Type GDDR3 GDDR5
Bus Width 448-bit 256-bit
Fab Process 55 nm 40 nm
Transistors 1400 million 1700 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 275

Amazon.com

Check prices at:

Radeon HD 6850

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.

Comments

One Response to “GeForce GTX 275 vs Radeon HD 6850”
فروش گرافیک 6850 XFX DDR5 با قیمت خوب says:

[...] با این گرافیک فوق العاده عوض میکنم 50 هم سر میدم GeForce GTX 275 vs Radeon HD 6850 – Performance Comparison Benchmarks @ Hardware Compare پاسخ با نقل قول « موضوع قبلی | [...]

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