GeForce 920M vs Radeon HD 7970

Intro

Compare all that to the Radeon HD 7970, which uses a 28 nm design. AMD has clocked the core frequency at 925 MHz. The GDDR5 memory runs at a speed of 1375 MHz on this specific card. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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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 920M		1180 points
	Difference: 7045 (597%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 7970 should theoretically be quite a bit better than the GeForce 920M in general. (explain)

Radeon HD 7970		264000 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 249600 (1733%)

Texel Rate

The Radeon HD 7970 is quite a bit (more or less 288%) faster with regards to anisotropic filtering than the GeForce 920M. (explain)

Radeon HD 7970		118400 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 87872 (288%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7970 is the winner, by a large margin. (explain)

Radeon HD 7970		29600 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 21968 (288%)

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 (in units of MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated 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 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 most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.