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Radeon HD 4770 vs Radeon R7 M260

Intro

The Radeon HD 4770 makes use of a 40 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 RAM works at a speed of 800 MHz on this particular model. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Compare all that to the Radeon R7 M260, which comes with GPU clock speed of 715 MHz, and 2048 MB of DDR3 memory set to run at 1000 MHz through a 64-bit bus. It also features 384 Stream Processors, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 4770 should be much faster than the Radeon R7 M260 in general. (explain)

Radeon HD 4770 51200 MB/sec
Radeon R7 M260 16000 MB/sec
Difference: 35200 (220%)

Texel Rate

The Radeon HD 4770 is much (about 40%) faster with regards to texture filtering than the Radeon R7 M260. (explain)

Radeon HD 4770 24000 Mtexels/sec
Radeon R7 M260 17160 Mtexels/sec
Difference: 6840 (40%)

Pixel Rate

The Radeon HD 4770 should be quite a bit (more or less 110%) faster with regards to anti-aliasing than the Radeon R7 M260, and should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 4770 12000 Mpixels/sec
Radeon R7 M260 5720 Mpixels/sec
Difference: 6280 (110%)

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 4770

Amazon.com

Check prices at:

Radeon R7 M260

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 4770 Radeon R7 M260
Manufacturer AMD AMD
Year Apr 28, 2009 June 2014
Code Name RV740 Opal/Topaz
Memory 512 MB 2048 MB
Core Speed 750 MHz 715 MHz
Memory Speed 3200 MHz 2000 MHz
Power (Max TDP) 80 watts (Unknown) watts
Bandwidth 51200 MB/sec 16000 MB/sec
Texel Rate 24000 Mtexels/sec 17160 Mtexels/sec
Pixel Rate 12000 Mpixels/sec 5720 Mpixels/sec
Unified Shaders 640(128x5) 384
Texture Mapping Units 32 24
Render Output Units 16 8
Bus Type GDDR5 DDR3
Bus Width 128-bit 64-bit
Fab Process 40 nm 28 nm
Transistors 826 million (Unknown) million
Bus PCIe 2.0 x16 PCIe 3.0 x8
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4770

Amazon.com

Check prices at:

Radeon R7 M260

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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