GeForce GTS 150 vs GeForce GTX 650

Intro

Compare all that to the GeForce GTX 650, which comes with core clock speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs as well as 32 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTS 150		141 Watts
	Difference: 77 Watts (120%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 should be 150% quicker than the GeForce GTS 150 in general, due to its greater data rate. (explain)

GeForce GTX 650		80000 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 48000 (150%)

Texel Rate

The GeForce GTS 150 is a lot (approximately 40%) faster with regards to texture filtering than the GeForce GTX 650. (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 13504 (40%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 650 is superior to the GeForce GTS 150, by a large margin. (explain)

GeForce GTX 650		16928 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 5088 (43%)

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 (measured in MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 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 high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the 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 the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core 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 many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.