Legit Reviews

This is for all those who said DDR2 "sucks" and was hype.

Intel 560 (Prescott 3.6GHz) @ 1.41 Vcore
Crucial DDR2 DDR533 @ 4-4-4-12 & 1.9 Vdimm
ABIT AA8-DuraMAX
Corsair HydroCool 200ex Watercooling

You should take a good hard look this at DDR667:

System Specs


Sandra 2004 Buffered:


Everest 1.1 READ:



Everest 1.1 WRITE:


Expect a full article on DDR2 later this week and go tell all your buddies that DDR2 isn't too shabby afterall. Oh yeah... 667MHz is not the max on this memory by the way! ;)

Maybe there is some life in these systems afterall! I've never seen a system break 7,000MB/Sec in AIDA32 or Everest before so you are close. Very nice scores and some of the best I have ever seen. Great work and keep it coming!

Well after a little more playing around I'm getting up to DDR722 with complete system stability. To get DDR722 I'm running the FSB at 270MHz with a memory divider of 3:4. The memory is being run at only 1.9Volts to reach these extreme speeds. One thing I have learned so far about DDR2 is that they don't need high voltages so far.

System Specs


Sandra 2004 Buffered:


Everest 1.1 WRITE:



Everest 1.1 READ:

I think this is a case of people expecting more but not seeing it. I have read several articals were people say its not what your getting now its whats comming down the pipe interms of PCIe and DDR2.

those are some INSANE numbers......REALLY impressive....are there any mobos that can use DDR2 with AGP video?....i am TOTALLY digging on moving to PCIe, but re-outfitting my entire rig is a bit more than i can chew right now....

- bliSS

In response to e-mail here is the label of the modules I am using.



Model #: CT16HTF6464AY53EB2
DDR2 PC2-4200 (DDR533)
UNBUFFERED
NON-ECC
64Meg x 64
1.8V

THis is just totally insane! Nice scores!

bliSSter wrote:those are some INSANE numbers......REALLY impressive....are there any mobos that can use DDR2 with AGP video?....i am TOTALLY digging on moving to PCIe, but re-outfitting my entire rig is a bit more than i can chew right now....

- bliSS

Not on an intel chipset. Intel 925, 915 are PCIe only some manufacturers are offering mobo's with agp and PCIe (ECS, gigabyte) but they are not true agp they run MUCH slower. You will have to wait and see what SIS and VIA come out with. Via has said that it will have a chipset that offers true agp and PCIe with DDR2 or DDR1.

interesting my 2.8C with AI7 and 1GB OCZ PC3500 Plat LE BH-5 @ 250mhz 2-2-2-7 at 3.18v get slightly higher bandwidth in sandra buffered than Prescott 3.6ghz @ 14x 250fsb 1:1 @ 250mhz 4-4-4-12

Everest like Aida32 numbers are expected to be higher for Prescotts too.

Could you run say hexus pifast and thelab pifast benchmarks as well as SuperPi 1, 2, 8, 16, 32M ?

I'm a bit confused as to how 250mhz translates into DDR667 in first post ???

Eva...

Don't forget that DDR533 requires a 3:4 divider. So keep the 3:4 divider and at 250MHz you will be running 667MHz. Think of 3:4 as the new memory divider to have and use all the time for DDR2...

I'm working on some benchmarks for you.

4:3*250 = 333.3 * 2 = 667

([new FSB]/[orginal FSB])*[Orginal RAM speed] = [new RAM speed]

so

(250/200)*533.33 = 666.66

Eva & Others,

Here are some Super Pi 1.1E numbers for you at 722MHz DDR:

1M: 34secs (default Intel 560 & 533MHz = 36secs)
2M: 1min 19sec (default = 1min 25secs)
4M: 2min 51sec (default = 3min 3secs)

I've never run Hexus Pifast before but here it is:

default (Intel 560 & DDR533): 60.48 Seconds
270FSB, 14 multi (3.78GHz) & DDR722: 57.00 Seconds
262FSB, 15 multi (3.93GHz) & DDR700: 56.63 Seconds

Doesn't look like the extra memory bandwidth does much good on Pi benchmarks. I'm guessing that memory bandwidth is not the bottleneck!

Well I wanted to test my above theory so I ran some more tests.

With the FSB at 270MHz and a multiplyer of 14 we found this on SuperPi to 4M places:

270FSB w/DDR 540MHz: 2min 55sec
270FSB w/DDR 720MHz: 2min 51sec

So with the same CPU frequency is seems like the more bandwidth the better still. We are seeing only a 4 second gain for the extra 180MHz on the memory though.

Methinks Pi calculations are primarily CPU related.

thanks Apoptosis really interesting indeed

you can find the newer thelab pifast v4.3 at http://www.xtremesystems.org/forums/sho ... adid=36926 as well optimised more for intels though heh

cheers -- thanks bro

looks like the motherboard handles high fsb fine.. you using SATA or PATA drives ?

System Specs:

Intel 560
ABIT AA8-DuraMax (Bios 13)
Corsair HydroCool 200ex Water Cooler
ATI Radeon X600 (RV380)
1GB Crucial PC2-4300 (DDR533)
OCZ-520ADJ 520W PSU
Maxtor 250GB SATA

Single SATA drive to answer your question ;)

thanks.. i have the original Corsair Hydrocool 200, so is there a waterblock for this for LGA775 ?

i should actually let you get back to actual testing the board so we can see the official review quicker ;) ;) :D

Those are very nice results inded!! But i must say they some at a very high pricetag at the moment. And very fast DDR400 show almost as good results ..... you wont notice the difference with any current game anyway.

I think ill skip this generation because the speed impact of going from P4 3.2 GHZ@ 3.7Ghz PC4000 .... to Prescott (Where does that burnt smell come from ... hehe.. just kidding ) someting Ghz and very expensive DDR2 memory.

I just cant justify that .... some comments?

/Xorpos