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GeForce GTX 660 Ti vs Radeon HD 7870

Intro

The GeForce GTX 660 Ti uses a 28 nm design. nVidia has set the core speed at 915 MHz. The GDDR5 RAM is set to run at a speed of 1500 MHz on this particular model. It features 1344 SPUs as well as 112 Texture Address Units and 24 Rasterization Operator Units.

Compare that to the Radeon HD 7870, which has clock speeds of 1000 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 memory. It features 1280 SPUs along with 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 should be a bit faster than the GeForce GTX 660 Ti in general. (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 a lot (approximately 28%) more effective at texture filtering than the Radeon HD 7870. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7870 is a better choice, by a large margin. (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: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

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

Display Prices

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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.

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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