GeForce GTX 650 vs GeForce GTX 860M

Intro

Compare those specifications to the GeForce GTX 860M, which features core speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. It features 1152 SPUs as well as 96 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 860M		4340 points
GeForce GTX 650		2263 points
	Difference: 2077 (92%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce GTX 650		64 Watts
	Difference: 19 Watts (42%)

Memory Bandwidth

In theory, the GeForce GTX 650 should be much faster than the GeForce GTX 860M in general. (explain)

GeForce GTX 650		80000 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 16000 (25%)

Texel Rate

The GeForce GTX 860M will be much (approximately 126%) faster with regards to anisotropic filtering than the GeForce GTX 650. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 42656 (126%)

Pixel Rate

The GeForce GTX 650 should be a lot (approximately 33%) faster with regards to anti-aliasing than the GeForce GTX 860M, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 650		16928 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 4176 (33%)

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 megabytes per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units by the core clock 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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 ability to get to the maximum fill rate.