GeForce GTX 950M vs Radeon HD 4670 1GB

Intro

Compare those specifications to the Radeon HD 4670 1GB, which has a GPU core clock speed of 750 MHz, and 1024 MB of GDDR4/GDDR3/DDR3/DDR2 memory running at 1100 MHz through a 128-bit bus. It also is comprised of 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M		55 Watts
Radeon HD 4670 1GB		70 Watts
	Difference: 15 Watts (27%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4670 1GB is 10% faster than the GeForce GTX 950M overall, due to its higher bandwidth. (explain)

Radeon HD 4670 1GB		35200 MB/sec
GeForce GTX 950M		32000 MB/sec
	Difference: 3200 (10%)

Texel Rate

The GeForce GTX 950M is quite a bit (approximately 52%) faster with regards to AF than the Radeon HD 4670 1GB. (explain)

GeForce GTX 950M		36560 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 12560 (52%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 950M is superior to the Radeon HD 4670 1GB, by far. (explain)

GeForce GTX 950M		14624 Mpixels/sec
Radeon HD 4670 1GB		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 information (in units of megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If 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 texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. 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 is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.