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GeForce GTX Titan Black vs Radeon HD 4890 1GB

Intro

The GeForce GTX Titan Black features a clock frequency of 889 MHz and a GDDR5 memory speed of 1750 MHz. It also makes use of a 384-bit bus, and makes use of a 28 nm design. It is made up of 2880 SPUs, 240 Texture Address Units, and 48 ROPs.

Compare that to the Radeon HD 4890 1GB, which uses a 55 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory is set to run at a frequency of 975 MHz on this specific model. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4890 1GB 190 Watts
GeForce GTX Titan Black 250 Watts
Difference: 60 Watts (32%)

Memory Bandwidth

The GeForce GTX Titan Black should theoretically perform much faster than the Radeon HD 4890 1GB overall. (explain)

GeForce GTX Titan Black 336000 MB/sec
Radeon HD 4890 1GB 124800 MB/sec
Difference: 211200 (169%)

Texel Rate

The GeForce GTX Titan Black will be much (approximately 433%) better at AF than the Radeon HD 4890 1GB. (explain)

GeForce GTX Titan Black 213360 Mtexels/sec
Radeon HD 4890 1GB 40000 Mtexels/sec
Difference: 173360 (433%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX Titan Black is superior to the Radeon HD 4890 1GB, by far. (explain)

GeForce GTX Titan Black 42672 Mpixels/sec
Radeon HD 4890 1GB 16000 Mpixels/sec
Difference: 26672 (167%)

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

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GeForce GTX Titan Black

Amazon.com

Check prices at:

Radeon HD 4890 1GB

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

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Model GeForce GTX Titan Black Radeon HD 4890 1GB
Manufacturer nVidia AMD
Year February 2014 Apr 2, 2009
Code Name GK110-430 RV790 XT
Memory 6144 MB 1024 MB
Core Speed 889 MHz 1000 MHz
Memory Speed 7000 MHz 3900 MHz
Power (Max TDP) 250 watts 190 watts
Bandwidth 336000 MB/sec 124800 MB/sec
Texel Rate 213360 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 42672 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 2880 800(160x5)
Texture Mapping Units 240 40
Render Output Units 48 16
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 28 nm 55 nm
Transistors 7080 million 959 million
Bus PCIe 3.0 x16 PCIe 2.0 x16
DirectX Version DirectX 11.0 DirectX 10.1
OpenGL Version OpenGL 4.4 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX Titan Black

Amazon.com

Check prices at:

Radeon HD 4890 1GB

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.

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