GeForce GTX 1630 vs GeForce GTX 650

Intro

Compare all that to the GeForce GTX 650, which features a core clock frequency of 1058 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is comprised of 384 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 1630		75 Watts
	Difference: 11 Watts (17%)

Memory Bandwidth

Performance-wise, the GeForce GTX 1630 should in theory be quite a bit better than the GeForce GTX 650 overall. (explain)

GeForce GTX 1630		98304 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 18304 (23%)

Texel Rate

The GeForce GTX 1630 will be a lot (more or less 64%) better at texture filtering than the GeForce GTX 650. (explain)

GeForce GTX 1630		55680 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 21824 (64%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 1630 is superior to the GeForce GTX 650, by a large margin. (explain)

GeForce GTX 1630		27840 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 10912 (64%)

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 max amount of data (in units of MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.