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No, it still isn't a special edition Mercedes

With Barcelona finally launched, the enthusiast community eagerly awaits the launch of AMD's Phenom desktop processors. A large gap, however, still remains between now and then, and what better way to fill that gap than with a new AMD Athlon 64 product?

Today AMD silent-launched its Athlon 64 X2 5000+ "Black Edition." The Athlon 64 X2 5000+ is AMD’s second processor offered under the Black Edition moniker; the first being the AMD Athlon 64 X2 6400+.

In reality, the Athlon 64 X2 5000+ can hardly be considered a completely new product. It still features the same 2.6GHz clock speed, 1 MB of L2 cache, and 65 Watt TDP. In fact, all technical aspects of the processor are identical to its non-Black Edition counterpart. The only new feature that the Athlon 64 X2 5000+ Black Edition brings to the table is an unlocked multiplier -- allowing overclockers to increase the frequency of the processor without the need to adjust the HyperTransport clock.

It is unmistakable that AMD is attempting to entice enthusiasts and DIY PC builders with the unlocked multiplier. Thus, success of the new product centers on its overclocking performance.

According sources familiar with the new CPUs launch schedule, retail availability of the processors should come later this month, but as of right now no major supplier is selling the new processor.   

AMD guidance sets the MSRP of the Athlon 64 X2 5000+ "Black Edition" at $136 in quantities of 1,000. 


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RE: Awesome
By johnsonx on 9/27/2007 4:19:21 PM , Rating: 2
ah, yeah, thanks for that Captain Obvious. 300Mhz memory is faster than 200Mhz memory. I'll have to jot that one down.

Now if you'll leave 2002 and rejoin us in 2007, on AMD platforms there is no such thing as a 1:1 memory ratio. Anything in the BIOS that implies a 1:1 ratio is trying to simplify things for you. On a K8 processor, the memory controller runs at the CPU core speed divided by an integer (my crappy S754 box is running the memory at CPU Core/11 right now, which is 177.5Mhz because I'm lightly overclocking a crappy Sis755 board with crappy PC2700 memory); it isn't directly related to the 'FSB' or HTT speed at all (well, obviously the core speed is a multiplier of the 'FSB' speed, but there's no direct link between memory clock and HTT clock... they're on opposite sides of the CPU core).

Setting the memory limit option simply changes the divider that will be used to derive the memory clock from the CPU clock. While some BIOS's say things like '1:1' or '3:2' in the memory limit option, and others say '166Mhz', '133Mhz' etc, neither set is really true (one of my boards actually has some Memory Limit options listed as speeds, others as ratios... talk about confusing!)

A simple example: you set the Memory Limit to 166Mhz. This tells the BIOS to use a divider of the CPU core frequency that would result in no more than 166Mhz IF the CPU were not overclocked. If the CPU is overclocked, the memory clock will most likely be higher than 166Mhz.

The old axiom about synchronizing the 'FSB' to the Memory speed simply doesn't apply to K8, because the two aren't connected (yes nitpickers, the 'FSB' is the HTT Clock).


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