GeForce 930M vs Radeon HD 4650 512MB

Intro

Compare all of that to the Radeon HD 4650 512MB, which has core clock speeds of 600 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 RAM. It features 320(64x5) SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 4650 512MB should be a small bit faster than the GeForce 930M in general. (explain)

Radeon HD 4650 512MB		16000 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 1600 (11%)

Texel Rate

The GeForce 930M is a bit (more or less 16%) more effective at anisotropic filtering than the Radeon HD 4650 512MB. (explain)

GeForce 930M		22272 Mtexels/sec
Radeon HD 4650 512MB		19200 Mtexels/sec
	Difference: 3072 (16%)

Pixel Rate

The GeForce 930M is a lot (about 55%) faster with regards to anti-aliasing than the Radeon HD 4650 512MB, and capable of handling higher resolutions without losing too much performance. (explain)

GeForce 930M		7424 Mpixels/sec
Radeon HD 4650 512MB		4800 Mpixels/sec
	Difference: 2624 (55%)

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

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units 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 fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.