GeForce GTX 950M vs Radeon HD 5770

Intro

Compare all that to the Radeon HD 5770, which has a clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It is comprised of 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

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

Performance-wise, the Radeon HD 5770 should in theory be much better than 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 (more or less 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 will be a small bit (approximately 8%) more effective at FSAA than the Radeon HD 5770, and capable of handling higher resolutions more effectively. (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: Bandwidth is the largest amount of data (in units of megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per 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. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 reach the max fill rate.