GeForce GTX 275 vs GeForce GTX 950

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
GeForce GTX 275		219 Watts
	Difference: 129 Watts (143%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 275 will be 20% faster than the GeForce GTX 950 overall, due to its higher bandwidth. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GTX 950		105728 MB/sec
	Difference: 21280 (20%)

Texel Rate

The GeForce GTX 275 is a small bit (approximately 3%) better at texture filtering than the GeForce GTX 950. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 950		49152 Mtexels/sec
	Difference: 1488 (3%)

Pixel Rate

The GeForce GTX 950 will be much (about 85%) faster with regards to AA than the GeForce GTX 275, and should be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 950		32768 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 15044 (85%)

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 largest amount of data (counted in megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 can be applied per second. This number is worked out by multiplying the total amount 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 processed per second.

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