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GeForce GTX 260 vs Radeon HD 6450 (OEM)

Intro

The GeForce GTX 260 comes with core clock speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 memory. It features 192 SPUs as well as 64 TAUs and 28 ROPs.

Compare those specifications to the Radeon HD 6450 (OEM), which has a clock frequency of 625 MHz and a GDDR3 memory frequency of 800 MHz. It also makes use of a 64-bit bus, and makes use of a 40 nm design. It is comprised of 160 SPUs, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 31 Watts
GeForce GTX 260 182 Watts
Difference: 151 Watts (487%)

Memory Bandwidth

The GeForce GTX 260 should theoretically be quite a bit faster than the Radeon HD 6450 (OEM) in general. (explain)

GeForce GTX 260 111888 MB/sec
Radeon HD 6450 (OEM) 12800 MB/sec
Difference: 99088 (774%)

Texel Rate

The GeForce GTX 260 is a lot (about 637%) faster with regards to texture filtering than the Radeon HD 6450 (OEM). (explain)

GeForce GTX 260 36864 Mtexels/sec
Radeon HD 6450 (OEM) 5000 Mtexels/sec
Difference: 31864 (637%)

Pixel Rate

The GeForce GTX 260 should be a lot (approximately 545%) faster with regards to AA than the Radeon HD 6450 (OEM), and also will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 260 16128 Mpixels/sec
Radeon HD 6450 (OEM) 2500 Mpixels/sec
Difference: 13628 (545%)

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

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GeForce GTX 260

Amazon.com

Radeon HD 6450 (OEM)

Amazon.com

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

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Model GeForce GTX 260 Radeon HD 6450 (OEM)
Manufacturer nVidia AMD
Year June 16, 2008 February 2011
Code Name G200 Caicos
Memory 896 MB 512 MB
Core Speed 576 MHz 625 MHz
Memory Speed 1998 MHz 1600 MHz
Power (Max TDP) 182 watts 31 watts
Bandwidth 111888 MB/sec 12800 MB/sec
Texel Rate 36864 Mtexels/sec 5000 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 2500 Mpixels/sec
Unified Shaders 192 160
Texture Mapping Units 64 8
Render Output Units 28 4
Bus Type GDDR3 GDDR3
Bus Width 448-bit 64-bit
Fab Process 65 nm 40 nm
Transistors 1400 million 370 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is worked out 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

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