GeForce GTX 650 vs GeForce GTX 980M

Intro

Compare those specs to the GeForce GTX 980M, which features a clock frequency of 1038 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It features 1536 SPUs, 96 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

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 980M		9476 points
GeForce GTX 650		2263 points
	Difference: 7213 (319%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 980M		100 Watts
	Difference: 36 Watts (56%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 980M will be 60% faster than the GeForce GTX 650 overall, due to its higher bandwidth. (explain)

GeForce GTX 980M		128000 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 48000 (60%)

Texel Rate

The GeForce GTX 980M is quite a bit (approximately 194%) better at texture filtering than the GeForce GTX 650. (explain)

GeForce GTX 980M		99648 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 65792 (194%)

Pixel Rate

The GeForce GTX 980M will be a lot (about 292%) better at AA than the GeForce GTX 650, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 980M		66432 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 49504 (292%)

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 (measured in MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, 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 most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.