DDR vs. DDR-2
This is one of the biggest points that separate both AMD and Intel. While we will be talking about both systems here, we won't actually be testing the AMD, simply because it doesn't support DDR-2 and is not likely to for some time.
DDR-2 is the evolution of the DDR memory standards. First off let's take a brief look over the two technologies and their main differences. In order to increase the overall data transmission throughput without having to increase the speed of the memory is to actually increase the internal data rate of the cell array. DDR-2 uses two cells running in parallel; each cell uses two bits, making it a 4 bit total cell whereas DDR only has a 2 bit process. In order for the data buffer to keep up, the buffers run at twice the cell array speed. This overall process allows for DDR-2 to run at an effective clock rate 4x that of the actual memory modules. What this means is DDR-2 memory with a 400MHz rating is actually running with cells running at a clock speed of 100MHz which would be 200MHz with regular DDR.
The next major addition to DDR-2 is On-Die signal termination. One of the biggest problems with DDR1 was compatibility with other modules in most cases and in a few others with motherboards. This was because of the Signal termination. DDR memory used a series of resistors on the motherboard in order to terminate the bus signal noise on the memory channel. The problem with this is two fold:
1) When using modules from different manufacturers, if one module sent too much noise through the bus line to the additional memory module you could get memory instabilities.
2) If the motherboard didn't use enough of the right resistors or use ones of inferior quality, the board would cause memory stability problems.
DDR-2 actually puts the termination for the bus signals on the modules themselves. This means that modules can be mixed and matched between manufacturers with relative ease. Another great feature is that the signal termination is closer to the memory modules, allowing for less noise on the bus and allowing for faster speeds due to a cleaner signal.
PRICING: You can find products similar to this one for sale below.
United States: Find other tech and computer products like this over at Amazon's website.
United Kingdom: Find other tech and computer products like this over at Amazon UK's website.
Canada: Find other tech and computer products like this over at Amazon Canada's website.
- We at TweakTown openly invite the companies who provide us with review samples / who are mentioned or discussed to express their opinion of our content. If any company representative wishes to respond, we will publish the response here.
Latest News Posts
- 10 new minutes of Anthem gameplay: boss fight, story & more
- FoxNext chooses the Nintendo Switch for Alien: Blackout
- Fire Emblem characters return in Smash Bros. Ultimate event
- Super Smash Bros. Ultimate sold 5 million units in 1st week
- First 2 hours of Kojima's Death Stranding confirmed complete
- HP EX950 SSD Review - When you want the fastest
- Pcie M.2 NVMe (1100mb/s as storage, 400mb/s in os)
- DC: Aquaman Cinema Review
- ADATA SX8200 Pro 256GB NVMe SSD Review
- Problem with RAM Overclock
- Trailer shows the challenges of Etrian Odyssey Nexus
- Team Jolly Roger Announces launch Date For Real-Time Space-Ballistic Tactics Game 'Worbital'
- Music Card Game Upstart WOWs Top Musicians Worldwide with Their First Product
- Stardock Announces Galactic Civilizations III: Retribution Expansion
- Zerouno Games: Use your two neurons with Bleep Bloop. Launch Trailer Available