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GeForce GTX 560 Ti 448 vs Radeon HD 4890 2GB

Intro

The GeForce GTX 560 Ti 448 comes with a clock speed of 732 MHz and a GDDR5 memory speed of 900 MHz. It also uses a 320-bit memory bus, and uses a 40 nm design. It is comprised of 448 SPUs, 56 Texture Address Units, and 40 ROPs.

Compare those specifications to the Radeon HD 4890 2GB, which features GPU core speed of 1000 MHz, and 2048 MB of GDDR5 memory running at 975 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4890 2GB 190 Watts
GeForce GTX 560 Ti 448 210 Watts
Difference: 20 Watts (11%)

Memory Bandwidth

The GeForce GTX 560 Ti 448 should theoretically perform just a bit faster than the Radeon HD 4890 2GB overall. (explain)

GeForce GTX 560 Ti 448 144000 MB/sec
Radeon HD 4890 2GB 124800 MB/sec
Difference: 19200 (15%)

Texel Rate

The GeForce GTX 560 Ti 448 is a bit (approximately 2%) better at anisotropic filtering than the Radeon HD 4890 2GB. (explain)

GeForce GTX 560 Ti 448 40992 Mtexels/sec
Radeon HD 4890 2GB 40000 Mtexels/sec
Difference: 992 (2%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 560 Ti 448 is superior to the Radeon HD 4890 2GB, by far. (explain)

GeForce GTX 560 Ti 448 29280 Mpixels/sec
Radeon HD 4890 2GB 16000 Mpixels/sec
Difference: 13280 (83%)

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 560 Ti 448

Amazon.com

Check prices at:

Radeon HD 4890 2GB

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 560 Ti 448 Radeon HD 4890 2GB
Manufacturer nVidia AMD
Year December 2011 Apr 2, 2009
Code Name GF110 RV790 XT
Memory 1280 MB 2048 MB
Core Speed 732 MHz 1000 MHz
Memory Speed 3600 MHz 3900 MHz
Power (Max TDP) 210 watts 190 watts
Bandwidth 144000 MB/sec 124800 MB/sec
Texel Rate 40992 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 448 800(160x5)
Texture Mapping Units 56 40
Render Output Units 40 16
Bus Type GDDR5 GDDR5
Bus Width 320-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 3000 million 959 million
Bus PCIe 2.0 x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.2 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range 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 number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the 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 card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 560 Ti 448

Amazon.com

Check prices at:

Radeon HD 4890 2GB

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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