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GeForce GTX 275 vs Radeon HD 6850

Intro

The GeForce GTX 275 has a GPU core speed of 633 MHz, and the 896 MB of GDDR3 memory is set to run at 1134 MHz through a 448-bit bus. It also features 240 Stream Processors, 80 TAUs, and 28 Raster Operation Units.

Compare all that to the Radeon HD 6850, which has core speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 960 SPUs along with 48 Texture Address Units and 32 ROPs.

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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

Performance-wise, the Radeon HD 6850 should in theory be a small bit better 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 quite a bit (more or less 36%) better 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 much (more or less 40%) faster with regards to full screen anti-aliasing than the GeForce GTX 275, and also 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 maximum amount of data (in units of MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of 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 output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum 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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