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GeForce GTX 560 vs Radeon HD 7770

Intro

The GeForce GTX 560 features a GPU core speed of 810 MHz, and the 1024 MB of GDDR5 RAM runs at 1001 MHz through a 256-bit bus. It also is made up of 336 Stream Processors, 56 TAUs, and 32 ROPs.

Compare those specs to the Radeon HD 7770, which has GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770 80 Watts
GeForce GTX 560 150 Watts
Difference: 70 Watts (88%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 will be 78% faster than the Radeon HD 7770 in general, because of its greater data rate. (explain)

GeForce GTX 560 128128 MB/sec
Radeon HD 7770 72000 MB/sec
Difference: 56128 (78%)

Texel Rate

The GeForce GTX 560 will be a little bit (approximately 13%) better at texture filtering than the Radeon HD 7770. (explain)

GeForce GTX 560 45360 Mtexels/sec
Radeon HD 7770 40000 Mtexels/sec
Difference: 5360 (13%)

Pixel Rate

The GeForce GTX 560 will be much (about 62%) faster with regards to AA than the Radeon HD 7770, and capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 560 25920 Mpixels/sec
Radeon HD 7770 16000 Mpixels/sec
Difference: 9920 (62%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce GTX 560

Amazon.com

Radeon HD 7770

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 560 Radeon HD 7770
Manufacturer nVidia AMD
Year May 2011 February 2012
Code Name GF114 Cape Verde XT
Fab Process 40 nm 28 nm
Bus PCIe 2.0 x16 PCIe 3.0 x16
Memory 1024 MB 1024 MB
Core Speed 810 MHz 1000 MHz
Shader Speed 1600 MHz (N/A) MHz
Memory Speed 4004 MHz 4500 MHz
Unified Shaders 336 640
Texture Mapping Units 56 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) 150 watts 80 watts
Shader Model 5.0 5.0
Bandwidth 128128 MB/sec 72000 MB/sec
Texel Rate 45360 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 25920 Mpixels/sec 16000 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

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

Comments

One Response to “GeForce GTX 560 vs Radeon HD 7770”
New budget pc. Rs 32k. Suggestions and advices needed plz. - Page 2 says:

[...] New budget pc. Rs 32k. Suggestions and advices needed plz. 560 and 7770 comparision: GeForce GTX 560 vs Radeon HD 7770 I would guess, the 6870 is a better competitor for the 560. [...]

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