GeForce GTX 950M vs Radeon HD 4870 X2

Intro

Compare those specifications to the Radeon HD 4870 X2, which comes with a clock speed of 750 MHz and a GDDR5 memory speed of 900 MHz. It also features a 256-bit memory bus, and makes use of a 55 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M		55 Watts
Radeon HD 4870 X2		350 Watts
	Difference: 295 Watts (536%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 X2 should perform a lot faster than the GeForce GTX 950M in general. (explain)

Radeon HD 4870 X2		230400 MB/sec
GeForce GTX 950M		32000 MB/sec
	Difference: 198400 (620%)

Texel Rate

The Radeon HD 4870 X2 will be a lot (more or less 64%) more effective at AF than the GeForce GTX 950M. (explain)

Radeon HD 4870 X2		60000 Mtexels/sec
GeForce GTX 950M		36560 Mtexels/sec
	Difference: 23440 (64%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 4870 X2 is the winner, by far. (explain)

Radeon HD 4870 X2		24000 Mpixels/sec
GeForce GTX 950M		14624 Mpixels/sec
	Difference: 9376 (64%)

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

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in a 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 - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.