GeForce GTX 650 vs GeForce GTX 980

Intro

Compare all of that to the GeForce GTX 980, which comes with clock speeds of 1126 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 Texture Address Units and 64 ROPs.

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 980		13552 points
GeForce GTX 650		2263 points
	Difference: 11289 (499%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 980		165 Watts
	Difference: 101 Watts (158%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 980 should in theory be a lot superior to the GeForce GTX 650 in general. (explain)

GeForce GTX 980		224000 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 144000 (180%)

Texel Rate

The GeForce GTX 980 will be a lot (about 326%) more effective at AF than the GeForce GTX 650. (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 110272 (326%)

Pixel Rate

The GeForce GTX 980 should be much (approximately 326%) better at FSAA than the GeForce GTX 650, and able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 55136 (326%)

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 information (in units of megabytes per second) that can be transported past the external memory interface in one 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 better the card's memory bandwidth, 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 number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units of the card 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.