GeForce GTX 950M vs Radeon HD 5770

Intro

Compare that to the Radeon HD 5770, which comes with a clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also features a 128-bit bus, and uses a 40 nm design. It is comprised of 800(160x5) SPUs, 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

As far as performance goes, the Radeon HD 5770 should in theory be quite a bit superior to the GeForce GTX 950M in general. (explain)

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

Texel Rate

The GeForce GTX 950M should be just a bit (approximately 8%) better at AF than the Radeon HD 5770. (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 950M is superior to the Radeon HD 5770, but it probably won't make a huge difference. (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 maximum amount of information (in units of MB per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

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