GeForce GTX 260 Core 216 vs GeForce GTX 650

Intro

Compare those specifications to the GeForce GTX 650, which features core speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs along with 32 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 260 Core 216		202 Watts
	Difference: 138 Watts (216%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 260 Core 216 should be 40% quicker than the GeForce GTX 650 overall, due to its higher bandwidth. (explain)

GeForce GTX 260 Core 216		111888 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 31888 (40%)

Texel Rate

The GeForce GTX 260 Core 216 is a lot (about 22%) more effective at texture filtering than the GeForce GTX 650. (explain)

GeForce GTX 260 Core 216		41472 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 7616 (22%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 650 is superior to the GeForce GTX 260 Core 216, though not by far. (explain)

GeForce GTX 650		16928 Mpixels/sec
GeForce GTX 260 Core 216		16128 Mpixels/sec
	Difference: 800 (5%)

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 max amount of data (measured in MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, 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 number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. 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 quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.