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Radeon HD 5850 vs Radeon R7 M265

Intro

The Radeon HD 5850 uses a 40 nm design. AMD has set the core speed at 725 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this particular model. It features 1440(288x5) SPUs as well as 72 Texture Address Units and 32 ROPs.

Compare all that to the Radeon R7 M265, which features a GPU core clock speed of 725 MHz, and 2048 MB of DDR3 memory running at 1000 MHz through a 128-bit bus. It also is comprised of 384 SPUs, 24 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 5850 will be 300% faster than the Radeon R7 M265 in general, because of its greater bandwidth. (explain)

Radeon HD 5850 128000 MB/sec
Radeon R7 M265 32000 MB/sec
Difference: 96000 (300%)

Texel Rate

The Radeon HD 5850 will be quite a bit (approximately 200%) more effective at anisotropic filtering than the Radeon R7 M265. (explain)

Radeon HD 5850 52200 Mtexels/sec
Radeon R7 M265 17400 Mtexels/sec
Difference: 34800 (200%)

Pixel Rate

The Radeon HD 5850 should be quite a bit (approximately 300%) faster with regards to AA than the Radeon R7 M265, and should be able to handle higher resolutions more effectively. (explain)

Radeon HD 5850 23200 Mpixels/sec
Radeon R7 M265 5800 Mpixels/sec
Difference: 17400 (300%)

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 5850

Amazon.com

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Radeon R7 M265

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 5850 Radeon R7 M265
Manufacturer AMD AMD
Year September 30, 2009 May 1 2014
Code Name Cypress PRO Opal XT
Memory 1024 MB 2048 MB
Core Speed 725 MHz 725 MHz
Memory Speed 4000 MHz 2000 MHz
Power (Max TDP) 151 watts (Unknown) watts
Bandwidth 128000 MB/sec 32000 MB/sec
Texel Rate 52200 Mtexels/sec 17400 Mtexels/sec
Pixel Rate 23200 Mpixels/sec 5800 Mpixels/sec
Unified Shaders 1440(288x5) 384
Texture Mapping Units 72 24
Render Output Units 32 8
Bus Type GDDR5 DDR3
Bus Width 256-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 2154 million (Unknown) million
Bus PCIe 2.1 x16 PCIe 3.0 x8
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 3.2 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 amount of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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Radeon HD 5850

Amazon.com

Check prices at:

Radeon R7 M265

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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