GeForce GTX 950M vs Radeon HD 5770

Intro

Compare those specs to the Radeon HD 5770, which has clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 RAM. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M		55 Watts
Radeon HD 5770		108 Watts
	Difference: 53 Watts (96%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5770 should be 140% faster than the GeForce GTX 950M in general, due to its higher data rate. (explain)

Radeon HD 5770		76800 MB/sec
GeForce GTX 950M		32000 MB/sec
	Difference: 44800 (140%)

Texel Rate

The GeForce GTX 950M will be a little bit (approximately 8%) faster with regards to texture filtering than the Radeon HD 5770. (explain)

GeForce GTX 950M		36560 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 2560 (8%)

Pixel Rate

The GeForce GTX 950M should be a bit (approximately 8%) faster with regards to AA than the Radeon HD 5770, and also will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 950M		14624 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 1024 (8%)

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 information (in units of megabytes per second) that can be moved over the external memory interface in one second. It's calculated 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 it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 amount of 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 clock speed of the chip. The better the texel rate, the better the graphics 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 most pixels the video 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 ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.