GeForce GTX 880M vs Radeon HD 7970

Intro

Compare those specifications to the Radeon HD 7970, which features a clock speed of 925 MHz and a GDDR5 memory speed of 1375 MHz. It also makes use of a 384-bit memory bus, and uses a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7970		8225 points
GeForce GTX 880M		6360 points
	Difference: 1865 (29%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
Radeon HD 7970		250 Watts
	Difference: 120 Watts (92%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7970 should theoretically be quite a bit superior to the GeForce GTX 880M overall. (explain)

Radeon HD 7970		264000 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 136000 (106%)

Texel Rate

The GeForce GTX 880M is just a bit (more or less 3%) more effective at texture filtering than the Radeon HD 7970. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon HD 7970		118400 Mtexels/sec
	Difference: 3712 (3%)

Pixel Rate

The GeForce GTX 880M should be a little bit (about 3%) more effective at full screen anti-aliasing than the Radeon HD 7970, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon HD 7970		29600 Mpixels/sec
	Difference: 928 (3%)

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 maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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