GeForce GTX 560 Ti vs Radeon HD 7770

Intro

The GeForce GTX 560 Ti uses a 40 nm design. nVidia has clocked the core frequency at 822 MHz. The GDDR5 RAM runs at a frequency of 1002 MHz on this particular model. It features 384 SPUs along with 64 TAUs and 32 ROPs.

Compare that to the Radeon HD 7770, which has a clock frequency of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation 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 max amount of data (in units of MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.