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Radeon HD 4730 vs Radeon R9 M275X

Intro

The Radeon HD 4730 comes with a GPU core clock speed of 700 MHz, and the 512 MB of GDDR5 memory is set to run at 900 MHz through a 128-bit bus. It also is comprised of 640(128x5) SPUs, 32 TAUs, and 8 Raster Operation Units.

Compare those specs to the Radeon R9 M275X, which has a clock speed of 900 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, 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

Performance-wise, the Radeon R9 M275X should in theory be a lot superior to the Radeon HD 4730 in general. (explain)

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

Texel Rate

The Radeon R9 M275X will be a lot (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

The Radeon R9 M275X should be quite a bit (about 157%) more effective at FSAA than the Radeon HD 4730, and should be able to handle higher screen resolutions without slowing down too much. (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

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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 data (in units of MB per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock speed of the card. 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 rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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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.

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