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GeForce GT 450 (OEM) vs Radeon HD 4870 512MB

Intro

The GeForce GT 450 (OEM) comes with core speeds of 790 MHz on the GPU, and 1000 MHz on the 1536 MB of GDDR5 memory. It features 144 SPUs as well as 24 Texture Address Units and 24 ROPs.

Compare those specs to the Radeon HD 4870 512MB, which has GPU clock speed of 750 MHz, and 512 MB of GDDR5 memory set to run at 900 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM) 106 Watts
Radeon HD 4870 512MB 150 Watts
Difference: 44 Watts (42%)

Memory Bandwidth

The Radeon HD 4870 512MB should theoretically be a small bit faster than the GeForce GT 450 (OEM) in general. (explain)

Radeon HD 4870 512MB 115200 MB/sec
GeForce GT 450 (OEM) 96000 MB/sec
Difference: 19200 (20%)

Texel Rate

The Radeon HD 4870 512MB should be a lot (more or less 58%) better at anisotropic filtering than the GeForce GT 450 (OEM). (explain)

Radeon HD 4870 512MB 30000 Mtexels/sec
GeForce GT 450 (OEM) 18960 Mtexels/sec
Difference: 11040 (58%)

Pixel Rate

The GeForce GT 450 (OEM) will be quite a bit (more or less 58%) better at anti-aliasing than the Radeon HD 4870 512MB, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GT 450 (OEM) 18960 Mpixels/sec
Radeon HD 4870 512MB 12000 Mpixels/sec
Difference: 6960 (58%)

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 GT 450 (OEM)

Amazon.com

Check prices at:

Radeon HD 4870 512MB

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 GT 450 (OEM) Radeon HD 4870 512MB
Manufacturer nVidia AMD
Year October 2010 Jun 25, 2008
Code Name GF106 RV770 XT
Memory 1536 MB 512 MB
Core Speed 790 MHz 750 MHz
Memory Speed 4000 MHz 3600 MHz
Power (Max TDP) 106 watts 150 watts
Bandwidth 96000 MB/sec 115200 MB/sec
Texel Rate 18960 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 18960 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 144 800(160x5)
Texture Mapping Units 24 40
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1170 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of 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 GT 450 (OEM)

Amazon.com

Check prices at:

Radeon HD 4870 512MB

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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