X-bit labs

Started by: pma | Date 08/21/07

Comments: 8 | Last Comment:  03/21/08

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1. I'd be curious to see what a memory bandwidth angry application, such as Abinit, would take out of those DD3 modules.

2. Strange that other hardware-testing sites have generally found DDR3-memory to be at least 5-10% faster overall than DDR2 memory. Not a huge margin, and maybe not worth it but anyway... Would be interesting if I could understand the difference between their tests and these...

3. You're quite right in your measurements, but there's one thing that doesn't seem to be clear.

DDR3 is going to be slower than DDR2 at the same, or even similar speed. That's an obvious consequence of the design. The entire point of DDR3 is that it can run at twice the speed of DDR2. By which point it has made up the deficit!

DDR3-1600 is actually a fully-specified, JEDEC operating speed. Just like DDR2-800, DDR-400 and PC-200 SDRAM. It's not pushing the specification at all.

All of these operate the internal RAM array at 200 MHz, giving them exactly the same fundamental latency.

Now, you can go faster As you've observed, for suitably nosebleed prices, you can get DDR2 that runs 50% faster than JEDEC dreamed. Just like you can get DDR1 that runs 25% faster (DDR-500).

It's not (yet) clear that we won't see DDR3-2400 as DDR3 matures. I'm kind of scared of signal integrity at that kind of speed, but the basic RAM demonstrably exists.

4. good because it make me more about centrino .

5. XDR2 FTW

6. no comments :)

7. Dear Sir/Madam,

I'm interesting with your website shop .

I would like to asking you about your product sale .
I'm looking for RAM DDR3.New or other stocks .
Do you sale it ? Can I reguest order to you and internasional delivery order to Singapore .
Because Not ready stocks for market in Singapore ..!
Do you accept Credit cards account VISA/MASTER ?
( Because Easy, fast and savety to Transaction Internasional )
If you agree, please your offer prices/unit+shipping cost to Singapore .
I'll send credit cards account to payment order .
Please need your quick respones and process my order .

Thank you very much .
Best Regards
Sakura Khen
PERDANA HOKYAN
Changi Singapore
Phone :+65-67471237.

8. Marketing of the DDR3 is to say the least missleading.... Where are the Comparisons to FFB as this is used by Apple and SUN...

Less pins, higher bandwidth, and cooler.

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