A somewhat uncommon version of the Athlon 64. It was only available in certain IBM and HP systems so you couldn't buy this through regular channels. It is also the only New Castle CPU with 256KB L2-cache meaning that the other 256KB L2-cache has been disabled. To make up for the loss of cache it's clockfrequency has been set to 2400MHz, just like the 3400+ (that does have 512KB L2). > Read more

Just like this 2800+ but clocked 200MHz faster.

The 3000+ has a broad range of CPU-cores, it came with:
- Clawhammer (130nm, S754)
- New Castle (130nm, S754)
- Winchester (90m, S939)
- Venice (90m, S939)
- Orleans (90nm, AM2) > Read more

The Athlon 64 2800+ on socket 754 was available in two versions: one (like this) with a New Castle core and one with a Clawhammer core. Clawhammer is the core on which the first Athlon 64's were based. New Castle followed quickly after and had one major difference: it 'only' had 512KB L2 in it's chip. Clawhammer featured 1MB L2.

The 2800+ with the Clawhammer also has 512KB like the New Castle. There is no difference in performance but there is a difference in the manufacturing process: the Clawhammer has a bigger 'die' (CPU-core) because of the 1MB L2 in total so AMD can slice less CPU's from a wafer compared to CPU's that are manufactured with 512KB L2 cache. On the other hand: 1MB Clawhammer CPU's that have defects in one part of the L2-cache can be configured to disable half the L2-cache. All the 1MB CPU's that didn't validate for 1MB can still be sold as 512KB part rather than being thrown away.

The 2800+ is the lowest clocked (and rated) S754 production CPU made by AMD. > Read more

This is the fastest rated Athlon 64 with New Castle-core available on S754. The S939-based New Castle CPU's where rated higher (up to 3800+) due to the faster HyperTransport bus and dual-channel memory capabilities.

S754 did offer faster CPU's: the 3700+, also at 2400MHz, but with Clawhammer featuring 1MB L2-cache. > Read more

The AMD Athlon 64 3200+ isn't always an AMD Athlon 64 3200+. Yes, they both have the same performance-rating but they don't always have the same clockfrequencies and L2-cache sizes. This phenomen is not new: the AMD Athlon XP 2600+ comes in three different variations as well. Even Cyrix already based their performance-rating on a combination of clockfrequency and front-side-bus speeds with the Cyrix MII CPU's.

In this case the Athlon 64 is based on the New Castle core. Almost all New Castle Athlon 64's have 512KB L2-cache whereas the earlier ClawHammer based CPU's could have up to 1MB L2 cache.

I haven't benchmarked this particular CPU yet but performance differences aren't that big and vary per application. The New Castle 3200+ has half the L2-cache but a 200MHz higher clock (2200MHz). The ClawHammer fares with 1MB L2-cache and a 2000MHz CPU clockfrequency. > Read more