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Gaming Performance Comparison
In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 8570D are significantly better than the AMD Radeon HD 6450.
The Radeon HD 8570D has a 94 MHz higher core clock speed and 8 more Texture Mapping Units than the Radeon HD 6450. This results in the Radeon HD 8570D providing 7.5 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.
The Radeon HD 8570D has a 94 MHz higher core clock speed and 4 more Render Output Units than the Radeon HD 6450. This results in the Radeon HD 8570D providing 3.8 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.
The Radeon HD 8570D was released over a year more recently than the Radeon HD 6450, and so the Radeon HD 8570D is likely to have better driver support, meaning it will be more optimized for running the latest games.
The Radeon HD 6450 has 512 MB video memory, but the Radeon HD 8570D does not have an entry, so the two GPUs cannot be reliably compared in this area.
The Radeon HD 8570D has 256 Shader Processing Units and the Radeon HD 6450 has 160. However, the actual shader performance of the Radeon HD 8570D is 166.4 and the actual shader performance of the Radeon HD 6450 is 88. The Radeon HD 8570D having 78.4 better shader performance and an altogether better performance when taking into account other relevant data means that the Radeon HD 8570D delivers a marginally smoother and more efficient experience when processing graphical data than the Radeon HD 6450.
The Radeon HD 8570D transistor size technology is 12 nm (nanometers) smaller than the Radeon HD 6450. This means that the Radeon HD 8570D is expected to run slightly cooler and achieve higher clock frequencies than the Radeon HD 6450.
The Radeon HD 8570D requires 65 Watts to run and the Radeon HD 6450 requires 27 Watts. We would recommend a PSU with at least 400 Watts for the Radeon HD 6450, but we do not have a recommended PSU wattage for the Radeon HD 8570D. The Radeon HD 8570D requires 38 Watts more than the Radeon HD 6450 to run. The difference is significant enough that the Radeon HD 8570D may have a slight adverse affect on your yearly electricity bills in comparison to the Radeon HD 6450.
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|Max Power||65 Watts||vs||27 Watts|
|Recommended RAM||-||3 GB|
|Recommended Screen Size||-||1024x768|
|Recommended PSU||-||400 Watts & 25 Amps|
|Mini Review||Radeon HD 8570D is an embedded Graphics Card on the mainstream Richland APUs A8-6600 and A8-6600K. |
They offer 256 Shader Processing Units, 16 TMUs and 8 ROPs. The memory interface depends on whether or not the system's RAM is dual channelled.
While the central unit runs at 844MHz (for 6600K, 800MHz for 6600), since the GFX doesn't have dedicated memory, the bandwidth will depend on the system ram speed which can be up to 1866MHz (the max speed supported by the CPU). Therefore, the max operating memory clock is 933MHz.
Its performance is slightly worse than Intel HD 4600 and only very slightly better than previous Radeon HD 7560D.
|Radeon HD 6450 is an entry-level GPU based on the 40nm architecture Terrascale 2. |
Technically, it succeeds Radeon HD 5450 and has to compete against Intel's integrated graphics. It's based on the Caicos Core and therefore offers 160 Shader Processing Units, 8 TMUs and 4 ROPs on a 64-bit memory interface of fast GDDR5. The memory clock will be clocked at up to 800MHz while the central unit can range from 625MHz to 750MHz.
This GPU's rank is based on the fastest version available and benchmarks indicate its performance is, overall, up to 40% faster than previous Radeon HD 5450. Expect to see 2GB versions of this GPU which will offer exactly the same performance.
Radeon HD 6450 was later (2012) renamed as Radeon HD 7470 GDDR5 and then (2013) as Radeon HD 8470.