Compare any two graphics cards:
VS

GeForce GTX 1660 Ti vs Radeon HD 7990

Intro

The GeForce GTX 1660 Ti comes with a GPU clock speed of 1500 MHz, and the 6144 MB of GDDR6 RAM runs at 1500 MHz through a 192-bit bus. It also is comprised of 1536 Stream Processors, 96 TAUs, and 48 ROPs.

Compare all of that to the Radeon HD 7990, which features core clock speeds of 950 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 memory. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1660 Ti 120 Watts
Radeon HD 7990 375 Watts
Difference: 255 Watts (213%)

Memory Bandwidth

Performance-wise, the Radeon HD 7990 should in theory be a lot superior to the GeForce GTX 1660 Ti overall. (explain)

Radeon HD 7990 576000 MB/sec
GeForce GTX 1660 Ti 294912 MB/sec
Difference: 281088 (95%)

Texel Rate

The Radeon HD 7990 will be much (more or less 69%) better at texture filtering than the GeForce GTX 1660 Ti. (explain)

Radeon HD 7990 243200 Mtexels/sec
GeForce GTX 1660 Ti 144000 Mtexels/sec
Difference: 99200 (69%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 1660 Ti is superior to the Radeon HD 7990, but not by far. (explain)

GeForce GTX 1660 Ti 72000 Mpixels/sec
Radeon HD 7990 60800 Mpixels/sec
Difference: 11200 (18%)

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

Display Prices

Hide Prices

GeForce GTX 1660 Ti

Amazon.com

Check prices at:

Radeon HD 7990

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Display Specifications

Hide Specifications

Model GeForce GTX 1660 Ti Radeon HD 7990
Manufacturer nVidia AMD
Year February 2019 April 2013
Code Name TU116-400-A1 Malta
Memory 6144 MB 3072 MB (x2)
Core Speed 1500 MHz 950 MHz (x2)
Memory Speed 1500 GB/s 6000 MHz (x2)
Power (Max TDP) 120 watts 375 watts
Bandwidth 294912 MB/sec 576000 MB/sec
Texel Rate 144000 Mtexels/sec 243200 Mtexels/sec
Pixel Rate 72000 Mpixels/sec 60800 Mpixels/sec
Unified Shaders 1536 2048 (x2)
Texture Mapping Units 96 128 (x2)
Render Output Units 48 32 (x2)
Bus Type GDDR6 GDDR5
Bus Width 192-bit 384-bit (x2)
Fab Process 12 nm 28 nm
Transistors 6600 million 4313 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 11.1
OpenGL Version OpenGL 4.6 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 are processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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

Display Prices

Hide Prices

GeForce GTX 1660 Ti

Amazon.com

Check prices at:

Radeon HD 7990

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Comments

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti Spam by WP-SpamShield