GeForce GTS 450 1GB vs Radeon HD 6750 1GB

Intro

The GeForce GTS 450 1GB comes with a core clock speed of 783 MHz and a GDDR5 memory frequency of 902 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 192 SPUs, 32 TAUs, and 16 Raster Operation Units.

Compare that to the Radeon HD 6750 1GB, which makes use of a 40 nm design. ATi has set the core frequency at 725 MHz. The GDDR5 memory runs at a speed of 1000 MHz on this specific model. It features 720 SPUs as well as 36 TAUs and 16 Rasterization Operator Units.

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 450 1GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 6750 1GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTS 450 1GB	Radeon HD 6750 1GB
Manufacturer	nVidia	ATi
Year	September 2010	January 2011
Code Name	GF106	Juniper Pro
Fab Process	40 nm	40 nm
Bus	PCIe x16	PCIe x16
Memory	1024 MB	1024 MB
Core Speed	783 MHz	725 MHz
Shader Speed	1566 MHz	(N/A) MHz
Memory Speed	902 MHz	1000 MHz
Unified Shaders	192	720
Texture Mapping Units	32	36
Render Output Units	16	16
Bus Type	GDDR5	GDDR5
Bus Width	128-bit	128-bit
DirectX Version	DirectX 11	DirectX 11
OpenGL Version	OpenGL 4.1	OpenGL 4.1
Power (Max TDP)	106 watts	86 watts
Shader Model	5.0	5.0
Bandwidth	57728 MB/sec	64000 MB/sec
Texel Rate	25056 Mtexels/sec	26100 Mtexels/sec
Pixel Rate	12528 Mpixels/sec	11600 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling 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 can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.