GeForce 930M vs Radeon HD 4750

Intro

Compare all of that to the Radeon HD 4750, which has a GPU core clock speed of 730 MHz, and 512 MB of GDDR5 RAM set to run at 800 MHz through a 128-bit bus. It also is comprised of 640(128x5) Stream Processors, 32 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 4750 should theoretically be quite a bit better than the GeForce 930M overall. (explain)

Radeon HD 4750		51200 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 36800 (256%)

Texel Rate

The Radeon HD 4750 will be a little bit (approximately 5%) better at texture filtering than the GeForce 930M. (explain)

Radeon HD 4750		23360 Mtexels/sec
GeForce 930M		22272 Mtexels/sec
	Difference: 1088 (5%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 4750 is superior to the GeForce 930M, by a large margin. (explain)

Radeon HD 4750		11680 Mpixels/sec
GeForce 930M		7424 Mpixels/sec
	Difference: 4256 (57%)

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 data (in units of megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied 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 this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.