In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 4830 512MB are noticeably better than the AMD Radeon R7 240 2GB.

The R7 240 has a 155 MHz higher core clock speed than the HD 4830, but the HD 4830 has 12 more Texture Mapping Units than the R7 240. As a result, the HD 4830 exhibits a 3.8 GTexel/s better Texture Fill Rate than the R7 240. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The R7 240 has a 155 MHz higher core clock speed than the HD 4830, but the HD 4830 has 8 more Render Output Units than the R7 240. As a result, the HD 4830 exhibits a 3.4 GPixel/s better Pixel Fill Rate than the R7 240. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The R7 240 was released over three years more recently than the HD 4830, and so the R7 240 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the HD 4830 when running the latest games.

The R7 240 has 1536 MB more video memory than the HD 4830, so is likely to be much better at displaying game textures at higher resolutions. However, overall, the HD 4830 has superior memory performance.

The HD 4830 has 28.8 GB/sec greater memory bandwidth than the R7 240, which means that the memory performance of the HD 4830 is slightly better than the R7 240.

The Radeon R7 240 2GB has 320 Shader Processing Units and the Radeon HD 4830 512MB has 640. However, the actual shader performance of the R7 240 is 212 and the actual shader performance of the HD 4830 is 258. The HD 4830 having 46 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 4830 delivers a noticeably smoother and more efficient experience when processing graphical data than the R7 240.

The R7 240 transistor size technology is 27 nm (nanometers) smaller than the HD 4830. This means that the R7 240 is expected to run slightly cooler and achieve higher clock frequencies than the HD 4830.

The Radeon R7 240 2GB requires 30 Watts to run and the Radeon HD 4830 512MB requires 95 Watts. We would recommend a PSU with at least 400 Watts for the R7 240 and a PSU with at least 450 Watts for the HD 4830. The HD 4830 requires 65 Watts more than the R7 240 to run. The difference is significant enough that the HD 4830 may have an adverse affect on your yearly electricity bills in comparison to the R7 240.