GeForce GTS 250 1GB vs Radeon HD 7750

Intro

The GeForce GTS 250 1GB features a clock frequency of 738 MHz and a GDDR3 memory frequency of 1100 MHz. It also features a 256-bit memory bus, and makes use of a 65/55 nm design. It features 128 SPUs, 64 TAUs, and 16 Raster Operation Units.

Compare those specs to the Radeon HD 7750, which makes use of a 28 nm design. ATi has clocked the core speed at 800 MHz. The GDDR5 memory is set to run at a speed of 1125 MHz on this particular card. It features 512 SPUs as well as 32 TAUs and 16 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.

GeForce GTS 250 1GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

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

Specifications

Model	GeForce GTS 250 1GB	Radeon HD 7750
Manufacturer	nVidia	ATi
Year	March 3, 2009	February 2012
Code Name	G92a/b	Cape Verde Pro
Fab Process	65/55 nm	28 nm
Bus	PCIe x16 2.0	PCIe 3.0 x16
Memory	1024 MB	1024 MB
Core Speed	738 MHz	800 MHz
Shader Speed	1836 MHz	(N/A) MHz
Memory Speed	1100 MHz	1125 MHz
Unified Shaders	128	512
Texture Mapping Units	64	32
Render Output Units	16	16
Bus Type	GDDR3	GDDR5
Bus Width	256-bit	128-bit
DirectX Version	DirectX 10	DirectX 11.1
OpenGL Version	OpenGL 3.1	OpenGL 4.2
Power (Max TDP)	145 watts	55 watts
Shader Model	4.0	5.0
Bandwidth	70400 MB/sec	72000 MB/sec
Texel Rate	47232 Mtexels/sec	25600 Mtexels/sec
Pixel Rate	11808 Mpixels/sec	12800 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the 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 the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.