GeForce 830M vs Radeon R9 M275X

Intro

Compare those specifications to the Radeon R9 M275X, which features a clock speed of 900 MHz and a GDDR5 memory frequency of 1125 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon R9 M275X		50 Watts
	Difference: 25 Watts (100%)

Memory Bandwidth

Theoretically, the Radeon R9 M275X should perform much faster than the GeForce 830M overall. (explain)

Radeon R9 M275X		72000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 57600 (400%)

Texel Rate

The Radeon R9 M275X will be a lot (approximately 119%) more effective at texture filtering than the GeForce 830M. (explain)

Radeon R9 M275X		36000 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 19536 (119%)

Pixel Rate

The Radeon R9 M275X will be a lot (more or less 75%) better at full screen anti-aliasing than the GeForce 830M, and also should be able to handle higher resolutions better. (explain)

Radeon R9 M275X		14400 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 6168 (75%)

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 data (measured in MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.