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GeForce GTX 660 Ti vs Radeon HD 7870

Intro

The GeForce GTX 660 Ti has core clock speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1344 SPUs as well as 112 Texture Address Units and 24 Rasterization Operator Units.

Compare those specifications to the Radeon HD 7870, which uses a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 memory runs at a speed of 1200 MHz on this particular model. It features 1280 SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7870 6230 points
GeForce GTX 660 Ti 6013 points
Difference: 217 (4%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti 150 Watts
Radeon HD 7870 175 Watts
Difference: 25 Watts (17%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7870 is 7% quicker than the GeForce GTX 660 Ti in general, due to its higher data rate. (explain)

Radeon HD 7870 153600 MB/sec
GeForce GTX 660 Ti 144000 MB/sec
Difference: 9600 (7%)

Texel Rate

The GeForce GTX 660 Ti is much (more or less 28%) faster with regards to AF than the Radeon HD 7870. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
Radeon HD 7870 80000 Mtexels/sec
Difference: 22480 (28%)

Pixel Rate

The Radeon HD 7870 will be quite a bit (about 46%) faster with regards to anti-aliasing than the GeForce GTX 660 Ti, and also capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 7870 32000 Mpixels/sec
GeForce GTX 660 Ti 21960 Mpixels/sec
Difference: 10040 (46%)

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 660 Ti

Amazon.com

Radeon HD 7870

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 660 Ti Radeon HD 7870
Manufacturer nVidia AMD
Year August 2012 March 2012
Code Name GK104 Pitcairn XT
Memory 2048 MB 2048 MB
Core Speed 915 MHz 1000 MHz
Memory Speed 6000 MHz 4800 MHz
Power (Max TDP) 150 watts 175 watts
Bandwidth 144000 MB/sec 153600 MB/sec
Texel Rate 102480 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 21960 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 1344 1280
Texture Mapping Units 112 80
Render Output Units 24 32
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 3540 million 2800 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be moved across 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 it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 660 Ti

Amazon.com

Radeon HD 7870

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.

Comments

4 Responses to “GeForce GTX 660 Ti vs Radeon HD 7870”
Which graphics card is better in 7870 7850 or gtx580 and gtx660ti in price and performance? - Page 2 says:

[...] load power consumption... Now for gtx 660 ti i'd recommend leaving that too, why? Take a look GeForce GTX 660 Ti vs Radeon HD 7870 – Performance Comparison Benchmarks @ Hardware Compare GeForce GTX 660 Ti vs Radeon HD 7850 – Performance Comparison Benchmarks @ Hardware Compare [...]

kozoot says:

NICE ATI....for 3D,Fast perform,and Gamer.

gd says:

mang saya mau beli kompor 1 kintal

Mlitter says:

Ati beats nVidia alot....
in performance and price

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