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Radeon HD 5770 vs Radeon R9 M270X

Intro

The Radeon HD 5770 uses a 40 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 RAM runs at a speed of 1200 MHz on this particular model. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Compare those specifications to the Radeon R9 M270X, which features a core clock speed of 725 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 5770 should perform a little bit faster than the Radeon R9 M270X in general. (explain)

Radeon HD 5770 76800 MB/sec
Radeon R9 M270X 72000 MB/sec
Difference: 4800 (7%)

Texel Rate

The Radeon HD 5770 will be a bit (more or less 17%) more effective at AF than the Radeon R9 M270X. (explain)

Radeon HD 5770 34000 Mtexels/sec
Radeon R9 M270X 29000 Mtexels/sec
Difference: 5000 (17%)

Pixel Rate

The Radeon HD 5770 will be a bit (approximately 17%) more effective at full screen anti-aliasing than the Radeon R9 M270X, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 5770 13600 Mpixels/sec
Radeon R9 M270X 11600 Mpixels/sec
Difference: 2000 (17%)

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 5770

Amazon.com

Check prices at:

Radeon R9 M270X

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 5770 Radeon R9 M270X
Manufacturer AMD AMD
Year October 13, 2009 May 1 2014
Code Name Juniper XT Venus XT
Memory 1024 MB 2048 MB
Core Speed 850 MHz 725 MHz
Memory Speed 4800 MHz 4500 MHz
Power (Max TDP) 108 watts (Unknown) watts
Bandwidth 76800 MB/sec 72000 MB/sec
Texel Rate 34000 Mtexels/sec 29000 Mtexels/sec
Pixel Rate 13600 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 800(160x5) 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 (Unknown) million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 3.2 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 5770

Amazon.com

Check prices at:

Radeon R9 M270X

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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