GeForce 930M vs Radeon HD 7970

Intro

Compare those specs to the Radeon HD 7970, which comes with GPU core speed of 925 MHz, and 3072 MB of GDDR5 memory running at 1375 MHz through a 384-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 32 ROPs.

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 930M		1490 points
	Difference: 6735 (452%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 7970 should theoretically be quite a bit better than the GeForce 930M overall. (explain)

Radeon HD 7970		264000 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 249600 (1733%)

Texel Rate

The Radeon HD 7970 is a lot (more or less 432%) faster with regards to AF than the GeForce 930M. (explain)

Radeon HD 7970		118400 Mtexels/sec
GeForce 930M		22272 Mtexels/sec
	Difference: 96128 (432%)

Pixel Rate

The Radeon HD 7970 will be a lot (about 299%) better at full screen anti-aliasing than the GeForce 930M, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 7970		29600 Mpixels/sec
GeForce 930M		7424 Mpixels/sec
	Difference: 22176 (299%)

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 largest amount of information (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.