Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce GTX 660 vs Radeon HD 7870

Intro

The GeForce GTX 660 has core speeds of 980 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 RAM. It features 960 SPUs along with 80 TAUs and 24 ROPs.

Compare that to the Radeon HD 7870, which comes with a clock frequency of 1000 MHz and a GDDR5 memory frequency of 1200 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It features 1280 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 140 Watts
Radeon HD 7870 175 Watts
Difference: 35 Watts (25%)

Memory Bandwidth

The Radeon HD 7870, in theory, should be a small bit faster than the GeForce GTX 660 overall. (explain)

Radeon HD 7870 153600 MB/sec
GeForce GTX 660 144192 MB/sec
Difference: 9408 (7%)

Texel Rate

The Radeon HD 7870 should be a bit (more or less 2%) faster with regards to AF than the GeForce GTX 660. (explain)

Radeon HD 7870 80000 Mtexels/sec
GeForce GTX 660 78400 Mtexels/sec
Difference: 1600 (2%)

Pixel Rate

The Radeon HD 7870 is a lot (about 36%) more effective at AA than the GeForce GTX 660, and capable of handling higher screen resolutions better. (explain)

Radeon HD 7870 32000 Mpixels/sec
GeForce GTX 660 23520 Mpixels/sec
Difference: 8480 (36%)

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

Display Prices

Hide Prices

GeForce GTX 660

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

Display Specifications

Hide Specifications

Model GeForce GTX 660 Radeon HD 7870
Manufacturer nVidia AMD
Year September 2012 March 2012
Code Name GK106 Pitcairn XT
Memory 2048 MB 2048 MB
Core Speed 980 MHz 1000 MHz
Memory Speed 6008 MHz 4800 MHz
Power (Max TDP) 140 watts 175 watts
Bandwidth 144192 MB/sec 153600 MB/sec
Texel Rate 78400 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 23520 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 960 1280
Texture Mapping Units 80 80
Render Output Units 24 32
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 2540 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 data (counted in MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, 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 anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Comments

2 Responses to “GeForce GTX 660 vs Radeon HD 7870”
Lange Überlegung - Kaufentscheidung - Gaming PC - Hilfe benötigt. - netzwelt.de Forum says:

[...] von AMD. Preislich auch um die 200€. Wenn du einen Vergleich deiner 660 und der 7870 möchtest Vergleich 660 mit 7870 Hierbei muss jedoch beachtet werden, das dieser Vergleich nur auf den reinen Daten basiert. [...]

LEEROY says:

HD 7870 is fair bit faster on paper, but the difference is greater in real world applications. Depending on the price (near enough identical in Australia, as of March 2013), go the HD7870. GTX660 is crippled by its memory bandwidth :c

Your email address will not be published. Required fields are marked *

*


You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

WordPress Anti-Spam by WP-SpamShield


[X]
[X]