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Radeon HD 6950 vs Radeon R9 270

Intro

The Radeon HD 6950 makes use of a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this particular model. It features 1408 SPUs as well as 88 Texture Address Units and 32 ROPs.

Compare those specs to the Radeon R9 270, which has a clock speed of 900 MHz and a GDDR5 memory speed of 1400 MHz. It also features a 256-bit bus, and uses a 28 nm design. It is comprised of 1280 SPUs, 80 Texture Address Units, and 32 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 270 5943 points
Radeon HD 6950 3240 points
Difference: 2703 (83%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270 150 Watts
Radeon HD 6950 200 Watts
Difference: 50 Watts (33%)

Memory Bandwidth

In theory, the Radeon R9 270 should be just a bit faster than the Radeon HD 6950 overall. (explain)

Radeon R9 270 179200 MB/sec
Radeon HD 6950 160000 MB/sec
Difference: 19200 (12%)

Texel Rate

The Radeon R9 270 is a bit (more or less 2%) better at anisotropic filtering than the Radeon HD 6950. (explain)

Radeon R9 270 72000 Mtexels/sec
Radeon HD 6950 70400 Mtexels/sec
Difference: 1600 (2%)

Pixel Rate

The Radeon R9 270 will be a little bit (approximately 13%) faster with regards to anti-aliasing than the Radeon HD 6950, and will be capable of handling higher screen resolutions better. (explain)

Radeon R9 270 28800 Mpixels/sec
Radeon HD 6950 25600 Mpixels/sec
Difference: 3200 (13%)

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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Radeon HD 6950

Amazon.com

Check prices at:

Radeon R9 270

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 Radeon HD 6950 Radeon R9 270
Manufacturer AMD AMD
Year December 2010 November 2013
Code Name Cayman Pro Curacao Pro
Memory 1024 MB 2048 MB
Core Speed 800 MHz 900 MHz
Memory Speed 5000 MHz 5600 MHz
Power (Max TDP) 200 watts 150 watts
Bandwidth 160000 MB/sec 179200 MB/sec
Texel Rate 70400 Mtexels/sec 72000 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 1408 1280
Texture Mapping Units 88 80
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 2640 million 2800 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred over 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 it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card 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 in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core 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 fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon HD 6950

Amazon.com

Check prices at:

Radeon R9 270

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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