Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce GTX 660 Ti vs Radeon HD 3870 X2 1GB

Intro

The GeForce GTX 660 Ti comes with a clock frequency of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 192-bit bus, and uses a 28 nm design. It features 1344 SPUs, 112 TAUs, and 24 Raster Operation Units.

Compare those specs to the Radeon HD 3870 X2 1GB, which features a clock speed of 825 MHz and a GDDR4 memory speed of 1126 MHz. It also makes use of a 256-bit bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 16 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon HD 3870 X2 1GB should be a bit faster than the GeForce GTX 660 Ti in general. (explain)

Radeon HD 3870 X2 1GB 144128 MB/sec
GeForce GTX 660 Ti 144000 MB/sec
Difference: 128 (0%)

Texel Rate

The GeForce GTX 660 Ti is much (about 288%) better at texture filtering than the Radeon HD 3870 X2 1GB. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
Radeon HD 3870 X2 1GB 26400 Mtexels/sec
Difference: 76080 (288%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 3870 X2 1GB is superior to the GeForce GTX 660 Ti, though not by far. (explain)

Radeon HD 3870 X2 1GB 26400 Mpixels/sec
GeForce GTX 660 Ti 21960 Mpixels/sec
Difference: 4440 (20%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Display Prices

Hide Prices

GeForce GTX 660 Ti

Amazon.com

Check prices at:

Radeon HD 3870 X2 1GB

Amazon.com

Check prices at:

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 Ti Radeon HD 3870 X2 1GB
Manufacturer nVidia AMD
Year August 2012 Jan 28, 2008
Code Name GK104 R680
Memory 2048 MB 1024 MB (x2)
Core Speed 915 MHz 825 MHz (x2)
Memory Speed 6000 MHz 2252 MHz (x2)
Power (Max TDP) 150 watts (Unknown) watts
Bandwidth 144000 MB/sec 144128 MB/sec
Texel Rate 102480 Mtexels/sec 26400 Mtexels/sec
Pixel Rate 21960 Mpixels/sec 26400 Mpixels/sec
Unified Shaders 1344 320(64x5) (x2)
Texture Mapping Units 112 16 (x2)
Render Output Units 24 16 (x2)
Bus Type GDDR5 GDDR4
Bus Width 192-bit 256-bit (x2)
Fab Process 28 nm 55 nm
Transistors 3540 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 2.0 x16/(internal PCIe 1.1 x16)
DirectX Version DirectX 11.0 DirectX 10.1
OpenGL Version OpenGL 4.3 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 can be processed 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 better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. 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 lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 660 Ti

Amazon.com

Check prices at:

Radeon HD 3870 X2 1GB

Amazon.com

Check prices at:

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

Be the first to leave a comment!

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


*

WordPress Anti-Spam by WP-SpamShield