GeForce GTX 950M vs Radeon HD 6950 2GB

Intro

Compare all of that to the Radeon HD 6950 2GB, which comes with a core clock speed of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 256-bit memory bus, and makes use of a 40 nm design. It is comprised of 1408 SPUs, 88 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M		55 Watts
Radeon HD 6950 2GB		200 Watts
	Difference: 145 Watts (264%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6950 2GB is 400% faster than the GeForce GTX 950M overall, because of its greater data rate. (explain)

Radeon HD 6950 2GB		160000 MB/sec
GeForce GTX 950M		32000 MB/sec
	Difference: 128000 (400%)

Texel Rate

The Radeon HD 6950 2GB is quite a bit (about 93%) more effective at AF than the GeForce GTX 950M. (explain)

Radeon HD 6950 2GB		70400 Mtexels/sec
GeForce GTX 950M		36560 Mtexels/sec
	Difference: 33840 (93%)

Pixel Rate

The Radeon HD 6950 2GB is quite a bit (approximately 75%) faster with regards to anti-aliasing than the GeForce GTX 950M, and also able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 6950 2GB		25600 Mpixels/sec
GeForce GTX 950M		14624 Mpixels/sec
	Difference: 10976 (75%)

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 data (counted in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 texture map elements (texels) that are processed per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.