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Radeon HD 4730 vs Radeon R9 M275X

Intro

The Radeon HD 4730 makes use of a 55 nm design. AMD has set the core speed at 700 MHz. The GDDR5 memory works at a speed of 900 MHz on this specific model. It features 640(128x5) SPUs as well as 32 TAUs and 8 Rasterization Operator Units.

Compare those specifications to the Radeon R9 M275X, which has core speeds of 900 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X 50 Watts
Radeon HD 4730 140 Watts
Difference: 90 Watts (180%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M275X will be 25% quicker than the Radeon HD 4730 in general, due to its greater data rate. (explain)

Radeon R9 M275X 72000 MB/sec
Radeon HD 4730 57600 MB/sec
Difference: 14400 (25%)

Texel Rate

The Radeon R9 M275X will be much (more or less 61%) faster with regards to AF than the Radeon HD 4730. (explain)

Radeon R9 M275X 36000 Mtexels/sec
Radeon HD 4730 22400 Mtexels/sec
Difference: 13600 (61%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M275X is a better choice, by a large margin. (explain)

Radeon R9 M275X 14400 Mpixels/sec
Radeon HD 4730 5600 Mpixels/sec
Difference: 8800 (157%)

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 4730

Amazon.com

Check prices at:

Radeon R9 M275X

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 4730 Radeon R9 M275X
Manufacturer AMD AMD
Year Jun 8, 2009 May 1 2014
Code Name RV770/CE Venus XTX
Memory 512 MB 2048 MB
Core Speed 700 MHz 900 MHz
Memory Speed 3600 MHz 4500 MHz
Power (Max TDP) 140 watts 50 watts
Bandwidth 57600 MB/sec 72000 MB/sec
Texel Rate 22400 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 5600 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 640(128x5) 640
Texture Mapping Units 32 40
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 956 million (Unknown) million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once 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 anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called 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 of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4730

Amazon.com

Check prices at:

Radeon R9 M275X

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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