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Radeon HD 4350 vs Radeon HD 5450

Intro

The Radeon HD 4350 has core clock speeds of 575 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 RAM. It features 80(16x5) SPUs as well as 8 TAUs and 4 Rasterization Operator Units.

Compare that to the Radeon HD 5450, which has clock speeds of 650 MHz on the GPU, and 800 MHz on the 512 MB of DDR3 RAM. It features 80(16x5) SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450 19 Watts
Radeon HD 4350 22 Watts
Difference: 3 Watts (16%)

Memory Bandwidth

The Radeon HD 5450 should theoretically perform quite a bit faster than the Radeon HD 4350 in general. (explain)

Radeon HD 5450 12800 MB/sec
Radeon HD 4350 8000 MB/sec
Difference: 4800 (60%)

Texel Rate

The Radeon HD 5450 will be a small bit (approximately 13%) faster with regards to AF than the Radeon HD 4350. (explain)

Radeon HD 5450 5200 Mtexels/sec
Radeon HD 4350 4600 Mtexels/sec
Difference: 600 (13%)

Pixel Rate

The Radeon HD 5450 is a little bit (about 13%) faster with regards to AA than the Radeon HD 4350, and will be capable of handling higher screen resolutions better. (explain)

Radeon HD 5450 2600 Mpixels/sec
Radeon HD 4350 2300 Mpixels/sec
Difference: 300 (13%)

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

Radeon HD 4350

Amazon.com

Radeon HD 5450

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

Model Radeon HD 4350 Radeon HD 5450
Manufacturer AMD AMD
Year Sep 30, 2008 February 4, 2010
Code Name RV710 Cedar PRO
Fab Process 55 nm 40 nm
Bus PCIe 2.0 x16, PCI PCIe 2.1 x16
Memory 512 MB 512 MB
Core Speed 575 MHz 650 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 500 MHz (1000 MHz effective) 800 MHz (1600 MHz effective)
Unified Shaders 80(16x5) 80(16x5)
Texture Mapping Units 8 8
Render Output Units 4 4
Bus Type DDR2 DDR3
Bus Width 64-bit 64-bit
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2
Power (Max TDP) 22 watts 19 watts
Shader Model 4.1 5.0
Bandwidth 8000 MB/sec 12800 MB/sec
Texel Rate 4600 Mtexels/sec 5200 Mtexels/sec
Pixel Rate 2300 Mpixels/sec 2600 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure 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 graphics 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 most pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Comments

2 Responses to “Radeon HD 4350 vs Radeon HD 5450”
Anonymous says:
HD 5450 is a Gud Graphics card for Entry Level gaming.
[...] be an upgrade. Well I am here to inform you it’s not. I’ve tried to do a few online comparisons and the 5450 should edge it, it does on paper. The reality is. The 4350 turns my mediocre 1stgen [...]

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