Geforce GTX 670 vs Radeon HD 7850

Intro

The Geforce GTX 670 features a clock speed of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It features 1344 SPUs, 112 TAUs, and 32 Raster Operation Units.

Compare that to the Radeon HD 7850, which has GPU core speed of 860 MHz, and 2048 MB of GDDR5 RAM running at 1200 MHz through a 256-bit bus. It also is comprised of 1024 Stream Processors, 64 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.

Geforce GTX 670 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 7850 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	Geforce GTX 670	Radeon HD 7850
Manufacturer	nVidia	ATi
Year	May 2012	March 2012
Code Name	GK104	Pitcairn Pro
Fab Process	28 nm	28 nm
Bus	PCIe 3.0 x16	PCIe 3.0 x16
Memory	2048 MB	2048 MB
Core Speed	915 MHz	860 MHz
Shader Speed	915 MHz	(N/A) MHz
Memory Speed	1500 MHz (6000 MHz effective)	1200 MHz (4800 MHz effective)
Unified Shaders	1344	1024
Texture Mapping Units	112	64
Render Output Units	32	32
Bus Type	GDDR5	GDDR5
Bus Width	256-bit	256-bit
DirectX Version	DirectX 11.1	DirectX 11.1
OpenGL Version	OpenGL 4.2	OpenGL 4.2
Power (Max TDP)	170 watts	130 watts
Shader Model	5.0	5.0
Bandwidth	192000 MB/sec	153600 MB/sec
Texel Rate	102480 Mtexels/sec	55040 Mtexels/sec
Pixel Rate	29280 Mpixels/sec	27520 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also 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 maximum fill rate.