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Radeon HD 6770 vs Radeon R7 250X 2GB

Intro

The Radeon HD 6770 features a GPU core clock speed of 900 MHz, and the 512 MB of GDDR5 RAM is set to run at 1050 MHz through a 128-bit bus. It also features 800 SPUs, 40 TAUs, and 16 Raster Operation Units.

Compare all that to the Radeon R7 250X 2GB, which has clock speeds of 1000 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB 95 Watts
Radeon HD 6770 108 Watts
Difference: 13 Watts (14%)

Memory Bandwidth

The Radeon R7 250X 2GB should theoretically be a bit faster than the Radeon HD 6770 overall. (explain)

Radeon R7 250X 2GB 72000 MB/sec
Radeon HD 6770 67200 MB/sec
Difference: 4800 (7%)

Texel Rate

The Radeon R7 250X 2GB should be a small bit (more or less 11%) better at texture filtering than the Radeon HD 6770. (explain)

Radeon R7 250X 2GB 40000 Mtexels/sec
Radeon HD 6770 36000 Mtexels/sec
Difference: 4000 (11%)

Pixel Rate

The Radeon R7 250X 2GB should be a bit (about 11%) better at anti-aliasing than the Radeon HD 6770, and capable of handling higher screen resolutions more effectively. (explain)

Radeon R7 250X 2GB 16000 Mpixels/sec
Radeon HD 6770 14400 Mpixels/sec
Difference: 1600 (11%)

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 6770

Amazon.com

Check prices at:

Radeon R7 250X 2GB

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 6770 Radeon R7 250X 2GB
Manufacturer AMD AMD
Year January 2011 February 2014
Code Name Juniper XT Cape Verde XT
Memory 512 MB 2048 MB
Core Speed 900 MHz 1000 MHz
Memory Speed 4200 MHz 4500 MHz
Power (Max TDP) 108 watts 95 watts
Bandwidth 67200 MB/sec 72000 MB/sec
Texel Rate 36000 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 14400 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 800 640
Texture Mapping Units 40 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 1040 million 1500 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 max amount of data (counted in MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. 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 many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 6770

Amazon.com

Check prices at:

Radeon R7 250X 2GB

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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