Intel Pentium 820 D 2.8GHz 90nm Dual Core

by Rob Williams on June 5, 2006 in Processors

If you are looking to upgrade to a dual core rig, but want to do it cheaply, then Intels 8** series may be for you. We are taking a look at the 820 D, a 2.8GHz chip with 2*1MB cache. What makes it a great value is the fact that it overclocks to almost 4GHz on air. But compared to other similar chips on the market, is this one worth your cash?

Sciencemark, Cinebench, SuperPi

Sciencemark is a superb CPU and memory benchmarking tool. It gives you total freedom over your tests and is more in-depth than most other tools out there. The Molecular Dynamics test is very complex, but overall the lower the time the better. The Cipher test takes a popular encryption scheme and decrypts using it. Once again, the lower the time, the better.

One example here I like to look at, is the difference in the Moldyn between stock and 3.74GHz. It skims a full 27 seconds off the time, for an overclock that can be done on air cooling. The Cipher scales quite well to our overclocks also.

Cinebench 9.5

Cinebench is a very unique benchmark, because it’s built atop a popular 3D modeling program called Cinema 4D. There are two separate tests that you can use, but we focus on the CPU intensive one. These CPU tests are divided into 1 Core and multi Core benchmarks. It renders an image using one core, then multiple, or in our case, two. The higher the score, the better.

SuperPI 1.5 Mod

SuperPI is a simple concept, but is a great way to see how fast your CPU can process a ‘simple’ mathematical calculation. In this case, it calculates PI to a specified amount of digits past the decimal. Since PI is virtually never-ending, it proves a perfect test. We choose to run 1M, 4M and 8M tests.

I was hoping that the CPU could break 30s SuperPI, but it couldn’t. On water at 4.2GHz, it came very close. But due to the second weak core, I believe it was holding back some of it’s power. For a ‘budget’ dual core, these times are very pleasing though.