GeForce GTX 660 vs GeForce GTX 950

Intro

Compare those specs to the GeForce GTX 950, which has a clock frequency of 1024 MHz and a GDDR5 memory frequency of 1652 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is made up of 768 SPUs, 48 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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

GeForce GTX 950		6536 points
GeForce GTX 660		5063 points
	Difference: 1473 (29%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
GeForce GTX 660		140 Watts
	Difference: 50 Watts (56%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 should be 36% faster than the GeForce GTX 950 overall, because of its greater data rate. (explain)

GeForce GTX 660		144192 MB/sec
GeForce GTX 950		105728 MB/sec
	Difference: 38464 (36%)

Texel Rate

The GeForce GTX 660 will be quite a bit (about 60%) more effective at anisotropic filtering than the GeForce GTX 950. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GTX 950		49152 Mtexels/sec
	Difference: 29248 (60%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 950 is a better choice, by far. (explain)

GeForce GTX 950		32768 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 9248 (39%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount 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 most pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.