GeForce 920M vs Radeon HD 7970

Intro

Compare those specs to the Radeon HD 7970, which comes with core clock speeds of 925 MHz on the GPU, and 1375 MHz on the 3072 MB of GDDR5 RAM. It features 2048 SPUs along with 128 Texture Address Units 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

In theory, the Radeon HD 7970 should be 1733% faster than the GeForce 920M in general, because of its higher data rate. (explain)

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

Texel Rate

The Radeon HD 7970 will be much (approximately 288%) better at AF than the GeForce 920M. (explain)

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

Pixel Rate

The Radeon HD 7970 is much (more or less 288%) better at full screen anti-aliasing than the GeForce 920M, and also capable of handling higher screen resolutions better. (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: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the 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 number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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