A review of the tech specs for the EP-8K7A+ states that there is a BIOS setting for 100 - 132, and another for 133 - 166. If your board has rhis feature, you will be able to turn it on and enable you system to run the PC2700 DDR RAM. ( 166 X 2 = 333 )
Before you purchase ANY memory, read and understand the article in OCPrices.com about PC2700 memory, it will reveal that there are a lot of counterfit memory systems out there, with Eye-Candy just trying to sucker you in with a marketing ploy. The ONLY memory worth purchasing is Samsing and Crucial. Understand the results.
Most BS memory is getting the factory seconds from Samsung (They don't sell their best to their compeditors) and re-labeling them after covering the Chipset with a copper or aluminum plate called a heatspreader. These tricked up and overclocked turkeys will perform almost as good as the TRUE Samsungs , but at a higher price.
There is a reason that Crucial and Samsung DO NOT put heatspreaders on their own products.
The JEDEC standard, which controls the specification of how silicon DDR memory is made and produced, was written in July of 2000, and there is no such thing as DDR400, DDR533, Etc. the standard is for PC2100 (DDR266) and PC2700 (DDR333). The PC2400 is a made-up marketing gimick, as is PC3000 and PC3200. JEDEC is NOT producing a standard for that, and anything that says it is, is nothing more that overclocked DDR266 or DDR333. Beware of false prophets, they only want your wallet.
You can't get better RAM than the Samsung PC2700 RAM, no matter what the FanBoys think - If they had gotten true quality RAM in the first place, their stuff would run even better than they are bragging about now.
(Don't flame me to protect your egos, read and understand what the facts are - you can even register with JEDEC and read the data yourselves)
Back to your system. Most of the time there is a performance drop when you exceed 768MB of RAM - that does not return to high performance until the RAM total is up to 2048MB. The system actually slows slightly at 1024MB - even though the RAM volume capacity is up. Knowing this - if you put a 512MB in slot #1, and 256MB in slot # 2, your system will be at its peak performance capacity, and playing with the Core and DDR Voltage will deliver your best performance parameters, just don't torch the RAM or CPU.
Best place to buy RAM (Samsung of course) is NewEgg, there may be others, but who do you trust?
Since the Motherboard spec states that this Mobo is a socket A, the biggest bang would be to take the money you saved by getting 768MB instead of 1GB, and buy one of the
XP1600+'s from NewEgg for $ 53 - $ 55. (price is changing almost daily) The 'Green Meanies' - Green ARIOA - Y's are being reported as performing as if they were XP2000+'s or XP2100+'s, and thats without even unlocking them. If the system doesn't explode when you start it, it will at least knock your socks off.
Picard: " Data, whats that out there in CyberSpace ?"
Data: " | / - \ _ / - \ | "
Worf: " Say what ?"