GeForce GTX 650 Ti vs Radeon HD 7990

Intro

Compare those specifications to the Radeon HD 7990, which has a core clock speed of 950 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 384-bit memory bus, and makes use of a 28 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, and 32 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 HD 7990		15520 points
GeForce GTX 650 Ti		3434 points
	Difference: 12086 (352%)

Ethereum Mining Hash Rate

Radeon HD 7990		32 Mh/s
GeForce GTX 650 Ti		10 Mh/s
	Difference: 22 (220%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti		110 Watts
Radeon HD 7990		375 Watts
	Difference: 265 Watts (241%)

Memory Bandwidth

Theoretically, the Radeon HD 7990 should perform a lot faster than the GeForce GTX 650 Ti in general. (explain)

Radeon HD 7990		576000 MB/sec
GeForce GTX 650 Ti		86400 MB/sec
	Difference: 489600 (567%)

Texel Rate

The Radeon HD 7990 should be quite a bit (more or less 309%) more effective at AF than the GeForce GTX 650 Ti. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce GTX 650 Ti		59392 Mtexels/sec
	Difference: 183808 (309%)

Pixel Rate

The Radeon HD 7990 will be a lot (more or less 309%) better at anti-aliasing than the GeForce GTX 650 Ti, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 7990		60800 Mpixels/sec
GeForce GTX 650 Ti		14848 Mpixels/sec
	Difference: 45952 (309%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 can be processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.