Radeon HD 7750 vs Radeon HD 7950

Intro

The Radeon HD 7750 uses a 28 nm design. ATi has set the core speed at 800 MHz. The GDDR5 RAM works at a frequency of 1125 MHz on this specific card. It features 512 SPUs along with 32 TAUs and 16 ROPs.

Compare all of that to the Radeon HD 7950, which comes with core speeds of 800 MHz on the GPU, and 1250 MHz on the 1536 MB of GDDR5 memory. It features 1792 SPUs along with 112 TAUs and 32 ROPs.

Price Comparison

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

Radeon HD 7750 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 7950 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	Radeon HD 7750	Radeon HD 7950
Manufacturer	ATi	ATi
Year	February 2012	January 2012
Code Name	Cape Verde Pro	Tahiti Pro
Fab Process	28 nm	28 nm
Bus	PCIe 3.0 x16	PCIe 3.0 x16
Memory	1024 MB	1536 MB
Core Speed	800 MHz	800 MHz
Shader Speed	N/A MHz	(N/A) MHz
Memory Speed	1125 MHz (4500 MHz effective)	1250 MHz (5000 MHz effective)
Unified Shaders	512	1792
Texture Mapping Units	32	112
Render Output Units	16	32
Bus Type	GDDR5	GDDR5
Bus Width	128-bit	384-bit
DirectX Version	DirectX 11.1	DirectX 11.1
OpenGL Version	OpenGL 4.2	OpenGL 4.2
Power (Max TDP)	55 watts	200 watts
Shader Model	5.0	5.0
Bandwidth	72000 MB/sec	240000 MB/sec
Texel Rate	25600 Mtexels/sec	89600 Mtexels/sec
Pixel Rate	12800 Mpixels/sec	25600 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines 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 output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.