GeForce GTX 950M vs Radeon HD 4670 512MB

Intro

Compare those specs to the Radeon HD 4670 512MB, which features a core clock frequency of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory speed of 1000 MHz. It also uses a 128-bit bus, and uses a 55 nm design. It features 320(64x5) SPUs, 32 TAUs, and 8 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 4670 512MB		70 Watts
	Difference: 15 Watts (27%)

Memory Bandwidth

Both cards have the exact same bandwidth, so theoretically they should have the same performance. (explain)

Texel Rate

The GeForce GTX 950M will be a lot (approximately 52%) better at texture filtering than the Radeon HD 4670 512MB. (explain)

GeForce GTX 950M		36560 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 12560 (52%)

Pixel Rate

The GeForce GTX 950M should be quite a bit (about 144%) faster with regards to AA than the Radeon HD 4670 512MB, and will be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 950M		14624 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 8624 (144%)

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 (counted in MB per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it must 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip 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 colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.