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GeForce GTS 450 1GB vs Radeon HD 6450 (OEM)

Intro

The GeForce GTS 450 1GB features a core clock frequency of 783 MHz and a GDDR5 memory frequency of 902 MHz. It also features a 128-bit memory bus, and uses a 40 nm design. It features 192 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Compare all of that to the Radeon HD 6450 (OEM), which features clock speeds of 625 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 160 SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 31 Watts
GeForce GTS 450 1GB 106 Watts
Difference: 75 Watts (242%)

Memory Bandwidth

The GeForce GTS 450 1GB, in theory, should perform a lot faster than the Radeon HD 6450 (OEM) overall. (explain)

GeForce GTS 450 1GB 57728 MB/sec
Radeon HD 6450 (OEM) 12800 MB/sec
Difference: 44928 (351%)

Texel Rate

The GeForce GTS 450 1GB should be a lot (approximately 401%) better at AF than the Radeon HD 6450 (OEM). (explain)

GeForce GTS 450 1GB 25056 Mtexels/sec
Radeon HD 6450 (OEM) 5000 Mtexels/sec
Difference: 20056 (401%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTS 450 1GB is the winner, and very much so. (explain)

GeForce GTS 450 1GB 12528 Mpixels/sec
Radeon HD 6450 (OEM) 2500 Mpixels/sec
Difference: 10028 (401%)

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 GTS 450 1GB

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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 GTS 450 1GB Radeon HD 6450 (OEM)
Manufacturer nVidia AMD
Year September 2010 February 2011
Code Name GF106 Caicos
Memory 1024 MB 512 MB
Core Speed 783 MHz 625 MHz
Memory Speed 3608 MHz 1600 MHz
Power (Max TDP) 106 watts 31 watts
Bandwidth 57728 MB/sec 12800 MB/sec
Texel Rate 25056 Mtexels/sec 5000 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 2500 Mpixels/sec
Unified Shaders 192 160
Texture Mapping Units 32 8
Render Output Units 16 4
Bus Type GDDR5 GDDR3
Bus Width 128-bit 64-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 370 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 can be applied per second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's 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 output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTS 450 1GB

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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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