Compare any two graphics cards:
VS

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

Intro

The GeForce GT 450 (OEM) makes use of a 40 nm design. nVidia has set the core speed at 790 MHz. The GDDR5 memory is set to run at a speed of 1000 MHz on this specific model. It features 144 SPUs along with 24 Texture Address Units and 24 Rasterization Operator Units.

Compare that to the Radeon HD 4870 512MB, which comes with clock speeds of 750 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 memory. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

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

Performance-wise, the Radeon HD 4870 512MB should in theory be a small bit superior to the GeForce GT 450 (OEM) overall. (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 will be much (approximately 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 a lot (more or less 58%) faster with regards to anti-aliasing than the Radeon HD 4870 512MB, and also capable of handling higher screen resolutions better. (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

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.

Specifications

Display Specifications

Hide Specifications

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 information (measured in MB per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, 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 most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max 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.

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