Digit-Life posted a review on the ECS GeForce 8800 GT Accelero S1 512MB, MSI GeForce 8600 GT Twin Turbo 256MB A quote from the article:

Today we're going to examine the most interesting 8800 GT card in the market that is made by ECS/Elitegroup. Cooled passively, it allows for an optional fan. Besides, it's factory-overclocked. The second product is a new card from MSI. It's based on the older GeForce 8600 GT, which is still quite popular, since NVIDIA hasn't launched anything new for this price range yet. This card features a custom cooler, and it has two BIOS versions with different frequencies.

ECS GeForce 8800 GT Accelero S1 512MB, MSI GeForce 8600 GT Twin Turbo Review