GeForce GTX 850M vs Radeon R5 M330

Intro

Compare those specs to the Radeon R5 M330, which has a GPU core clock speed of 1030 MHz, and 2048 MB of DDR3 RAM running at 900 MHz through a 64-bit bus. It also features 320 SPUs, 20 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 850M should in theory be quite a bit faster than the Radeon R5 M330 in general. (explain)

GeForce GTX 850M		32000 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 17600 (122%)

Texel Rate

The GeForce GTX 850M should be quite a bit (about 70%) more effective at anisotropic filtering than the Radeon R5 M330. (explain)

GeForce GTX 850M		35040 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 14440 (70%)

Pixel Rate

The GeForce GTX 850M will be much (more or less 70%) faster with regards to full screen anti-aliasing than the Radeon R5 M330, and also should be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 850M		14016 Mpixels/sec
Radeon R5 M330		8240 Mpixels/sec
	Difference: 5776 (70%)

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 maximum amount of information (in units of MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 amount of texture map elements (texels) that can be processed per second. This number is calculated 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 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 most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. 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 lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.