GeForce GTX 465 vs GeForce GTX 980

Intro

Compare all of that to the GeForce GTX 980, which comes with a clock frequency of 1126 MHz and a GDDR5 memory speed of 1750 MHz. It also features a 256-bit bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980		165 Watts
GeForce GTX 465		200 Watts
	Difference: 35 Watts (21%)

Memory Bandwidth

Performance-wise, the GeForce GTX 980 should theoretically be much superior to the GeForce GTX 465 overall. (explain)

GeForce GTX 980		224000 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 121408 (118%)

Texel Rate

The GeForce GTX 980 is much (more or less 440%) faster with regards to anisotropic filtering than the GeForce GTX 465. (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 117420 (440%)

Pixel Rate

The GeForce GTX 980 should be much (about 271%) faster with regards to full screen anti-aliasing than the GeForce GTX 465, and also should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 52640 (271%)

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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 amount of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one 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 - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.