GeForce 830M vs GeForce GTX 970

Intro

Compare those specifications to the GeForce GTX 970, which has a core clock speed of 1050 MHz and a GDDR5 memory frequency of 1750 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1664 SPUs, 104 TAUs, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
GeForce GTX 970		145 Watts
	Difference: 120 Watts (480%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 970 should perform quite a bit faster than the GeForce 830M overall. (explain)

GeForce GTX 970		224000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 209600 (1456%)

Texel Rate

The GeForce GTX 970 will be a lot (more or less 563%) better at AF than the GeForce 830M. (explain)

GeForce GTX 970		109200 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 92736 (563%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 970 is superior to the GeForce 830M, by a large margin. (explain)

GeForce GTX 970		67200 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 58968 (716%)

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 MB per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, the result 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better 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 could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.