GeForce GT 640 DDR3 vs Geforce GTX 760

Intro

Compare all that to the Geforce GTX 760, which makes use of a 28 nm design. nVidia has set the core speed at 980 MHz. The GDDR5 memory is set to run at a speed of 1502 MHz on this particular card. It features 1152 SPUs along with 96 TAUs and 32 Rasterization Operator Units.

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 760		5923 points
GeForce GT 640 DDR3		1560 points
	Difference: 4363 (280%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 640 DDR3		65 Watts
Geforce GTX 760		170 Watts
	Difference: 105 Watts (162%)

Memory Bandwidth

In theory, the Geforce GTX 760 will be 237% quicker than the GeForce GT 640 DDR3 in general, due to its greater bandwidth. (explain)

Geforce GTX 760		192256 MB/sec
GeForce GT 640 DDR3		57024 MB/sec
	Difference: 135232 (237%)

Texel Rate

The Geforce GTX 760 should be much (approximately 227%) more effective at AF than the GeForce GT 640 DDR3. (explain)

Geforce GTX 760		94080 Mtexels/sec
GeForce GT 640 DDR3		28800 Mtexels/sec
	Difference: 65280 (227%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Geforce GTX 760 is the winner, by far. (explain)

Geforce GTX 760		31360 Mpixels/sec
GeForce GT 640 DDR3		14400 Mpixels/sec
	Difference: 16960 (118%)

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 megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. 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 output 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 max fill rate.