GeForce GTX 870M vs Radeon R5 M330

Intro

Compare those specifications to the Radeon R5 M330, which has a clock frequency of 1030 MHz and a DDR3 memory frequency of 900 MHz. It also features a 64-bit bus, and makes use of a 28 nm design. It is made up of 320 SPUs, 20 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTX 870M should theoretically be much superior to 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 is quite a bit (more or less 412%) more effective at AF than the Radeon R5 M330. (explain)

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

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 870M is superior to the Radeon R5 M330, by far. (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: Bandwidth is the max amount of data (measured in megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.