GeForce GTX 870M vs Radeon R5 M330

Intro

Compare that to the Radeon R5 M330, which comes with a clock frequency of 1030 MHz and a DDR3 memory frequency of 900 MHz. It also uses a 64-bit memory bus, and makes use of a 28 nm design. It is comprised of 320 SPUs, 20 TAUs, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 870M should perform much faster than the Radeon R5 M330 overall. (explain)

GeForce GTX 870M		96000 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 81600 (567%)

Texel Rate

The GeForce GTX 870M will be a lot (approximately 412%) better at anisotropic filtering than the Radeon R5 M330. (explain)

GeForce GTX 870M		105392 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 84792 (412%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 870M is superior to the Radeon R5 M330, and very much so. (explain)

GeForce GTX 870M		22584 Mpixels/sec
Radeon R5 M330		8240 Mpixels/sec
	Difference: 14344 (174%)

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 (in units of megabytes per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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 max fill rate.