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Radeon HD 7750 vs Radeon R7 240

Intro

The Radeon HD 7750 comes with core speeds of 800 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 memory. It features 512 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Compare those specs to the Radeon R7 240, which has a clock speed of 730 MHz and a DDR3 memory speed of 900 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It features 320 SPUs, 20 Texture Address Units, and 8 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240 30 Watts
Radeon HD 7750 55 Watts
Difference: 25 Watts (83%)

Memory Bandwidth

In theory, the Radeon HD 7750 should perform much faster than the Radeon R7 240 overall. (explain)

Radeon HD 7750 72000 MB/sec
Radeon R7 240 28800 MB/sec
Difference: 43200 (150%)

Texel Rate

The Radeon HD 7750 should be much (more or less 75%) more effective at anisotropic filtering than the Radeon R7 240. (explain)

Radeon HD 7750 25600 Mtexels/sec
Radeon R7 240 14600 Mtexels/sec
Difference: 11000 (75%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 7750 is the winner, by far. (explain)

Radeon HD 7750 12800 Mpixels/sec
Radeon R7 240 5840 Mpixels/sec
Difference: 6960 (119%)

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

Radeon HD 7750

Amazon.com

Radeon R7 240

Amazon.com

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

Model Radeon HD 7750 Radeon R7 240
Manufacturer AMD AMD
Year February 2012 October 2013
Code Name Cape Verde Pro Oland PRO
Fab Process 28 nm 28 nm
Bus PCIe 3.0 x16 PCIe 3.0 x16
Memory 1024 MB 2048 MB
Core Speed 800 MHz 730 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 1125 MHz (4500 MHz effective) 900 MHz (1800 MHz effective)
Unified Shaders 512 320
Texture Mapping Units 32 20
Render Output Units 16 8
Bus Type GDDR5 DDR3
Bus Width 128-bit 128-bit
DirectX Version DirectX 11.1 DirectX 11.2
OpenGL Version OpenGL 4.2 OpenGL 4.3
Power (Max TDP) 55 watts 30 watts
Shader Model 5.0 5.0
Bandwidth 72000 MB/sec 28800 MB/sec
Texel Rate 25600 Mtexels/sec 14600 Mtexels/sec
Pixel Rate 12800 Mpixels/sec 5840 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest 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 interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its 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 core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

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