GeForce GTX 560 Ti vs Radeon HD 7770

Intro

The GeForce GTX 560 Ti makes use of a 40 nm design. nVidia has set the core speed at 822 MHz. The GDDR5 memory runs at a speed of 1002 MHz on this particular model. It features 384 SPUs along with 64 Texture Address Units and 32 Rasterization Operator Units.

Compare that to the Radeon HD 7770, which features core speeds of 1000 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 RAM. It features 640 SPUs along with 40 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 GTX 560 Ti Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 7770 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTX 560 Ti	Radeon HD 7770
Manufacturer	nVidia	ATi
Year	January 2011	February 2012
Code Name	GF114	Cape Verde XT
Fab Process	40 nm	28 nm
Bus	PCIe x16	PCIe 3.0 x16
Memory	1024 MB	1024 MB
Core Speed	822 MHz	1000 MHz
Shader Speed	1645 MHz	(N/A) MHz
Memory Speed	1002 MHz (4008 MHz effective)	1125 MHz (4500 MHz effective)
Unified Shaders	384	640
Texture Mapping Units	64	40
Render Output Units	32	16
Bus Type	GDDR5	GDDR5
Bus Width	256-bit	128-bit
DirectX Version	DirectX 11	DirectX 11.1
OpenGL Version	OpenGL 4.1	OpenGL 4.2
Power (Max TDP)	170 watts	80 watts
Shader Model	5.0	5.0
Bandwidth	128256 MB/sec	72000 MB/sec
Texel Rate	52608 Mtexels/sec	40000 Mtexels/sec
Pixel Rate	26304 Mpixels/sec	16000 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of data (counted in MB per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.