GeForce GT 640 DDR3 vs Radeon RX 460

Intro

Compare all of that to the Radeon RX 460, which comes with core clock speeds of 1090 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

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

Radeon RX 460		5595 points
GeForce GT 640 DDR3		1560 points
	Difference: 4035 (259%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 640 DDR3		65 Watts
Radeon RX 460		75 Watts
	Difference: 10 Watts (15%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 460 is 96% quicker than the GeForce GT 640 DDR3 in general, because of its higher bandwidth. (explain)

Radeon RX 460		112000 MB/sec
GeForce GT 640 DDR3		57024 MB/sec
	Difference: 54976 (96%)

Texel Rate

The Radeon RX 460 is quite a bit (more or less 112%) better at texture filtering than the GeForce GT 640 DDR3. (explain)

Radeon RX 460		61040 Mtexels/sec
GeForce GT 640 DDR3		28800 Mtexels/sec
	Difference: 32240 (112%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 460 is superior to the GeForce GT 640 DDR3, by far. (explain)

Radeon RX 460		17440 Mpixels/sec
GeForce GT 640 DDR3		14400 Mpixels/sec
	Difference: 3040 (21%)

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 largest amount of data (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.