Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce GTX 660 Ti vs Radeon R9 M390X

Intro

The GeForce GTX 660 Ti makes use of a 28 nm design. nVidia has clocked the core frequency at 915 MHz. The GDDR5 memory runs at a speed of 1500 MHz on this specific model. It features 1344 SPUs along with 112 TAUs and 24 ROPs.

Compare all of that to the Radeon R9 M390X, which makes use of a 28 nm design. AMD has set the core frequency at 723 MHz. The GDDR5 memory works at a frequency of 1250 MHz on this specific model. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X 125 Watts
GeForce GTX 660 Ti 150 Watts
Difference: 25 Watts (20%)

Memory Bandwidth

In theory, the Radeon R9 M390X should be 11% faster than the GeForce GTX 660 Ti overall, due to its higher bandwidth. (explain)

Radeon R9 M390X 160000 MB/sec
GeForce GTX 660 Ti 144000 MB/sec
Difference: 16000 (11%)

Texel Rate

The GeForce GTX 660 Ti should be just a bit (approximately 11%) faster with regards to anisotropic filtering than the Radeon R9 M390X. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
Radeon R9 M390X 92544 Mtexels/sec
Difference: 9936 (11%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M390X is a better choice, though not by far. (explain)

Radeon R9 M390X 23136 Mpixels/sec
GeForce GTX 660 Ti 21960 Mpixels/sec
Difference: 1176 (5%)

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 Ti

Amazon.com

Check prices at:

Radeon R9 M390X

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 R9 M390X
Manufacturer nVidia AMD
Year August 2012 2015
Code Name GK104 Tonga
Memory 2048 MB 4096 MB
Core Speed 915 MHz 723 MHz
Memory Speed 6000 MHz 5000 MHz
Power (Max TDP) 150 watts 125 watts
Bandwidth 144000 MB/sec 160000 MB/sec
Texel Rate 102480 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 21960 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 1344 2048
Texture Mapping Units 112 128
Render Output Units 24 32
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 3540 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics 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 can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's 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 also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 660 Ti

Amazon.com

Check prices at:

Radeon R9 M390X

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