GeForce GTX 980M vs Radeon HD 4670 1GB

Intro

Compare those specifications to the Radeon HD 4670 1GB, which features core speeds of 750 MHz on the GPU, and 1100 MHz on the 1024 MB of GDDR4/GDDR3/DDR3/DDR2 RAM. It features 320(64x5) SPUs as well as 32 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
GeForce GTX 980M		100 Watts
	Difference: 30 Watts (43%)

Memory Bandwidth

The GeForce GTX 980M should theoretically be much faster than the Radeon HD 4670 1GB overall. (explain)

GeForce GTX 980M		128000 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 92800 (264%)

Texel Rate

The GeForce GTX 980M is a lot (more or less 315%) more effective at AF than the Radeon HD 4670 1GB. (explain)

GeForce GTX 980M		99648 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 75648 (315%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 980M is a better choice, by a large margin. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 60432 (1007%)

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 max amount of data (counted in megabytes per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units by the core 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.