Crucial PC2100 @ DDR400+ Speeds???

[rpr]

I just RMA'd some Geil PC4000 RAM as they were giving me MemTest errors at any overclocked sppeds. So I threw in some old sticks of Crucial PC2100 to keep me going.

Well, I currently have them running at DDR400 sppeds, without any MemTest errors! I haven't found the top end yet. Is this unheard of?

 

[BlueWeasel]

I've heard of systems running PC2100 at DDR400 (PC3200) speeds, but they are few and far between.

What voltage are you running the RAM at?

 

[rpr]

DDR voltage is at 2.85v. I just topped out at about 406Mhz.

 

[jpeyton]

It would be helpful if you posted the chip markings for us.

 

[rpr]

0146 4-2
MT 46V16M8
TG -75 A

 

[Rafael]

Memory timings? 1:1?

I don't know what timings you are running, but it's very nice!

Raf

 

[Elcs]

Originally posted by: rpr
0146 4-2
MT 46V16M8
TG -75 A

Might rip open my dads machine. I bought a stick of PC2100 from Crucial for my rig which my dad now has. Wonder if it can beat my TwinMOS Winbond CH-5 PC3200 which is stable at 210.

 

[rpr]

Elcs: I would be interested to know. Keep us posted.

Here is what I am currently running them at. They were stable up to 406DDR, but to keep my CPU speed maxed out (282 x 12 = 3.4Ghz), I have to use the 2/3 multiplier (282 x 2/3 = 188fsb for the memory = 376DDR).

SiSoftware Sandra 2004

Processor
Model : Intel(R) Pentium(R) 4 CPU 2.40GHz
Speed : 3.39GHz
Performance Rating : PR4506 (estimated)
SMT Support : 2 Unit(s)
Type : Standard
L2 On-board Cache : 512kB ECC Synchronous ATC (8-way sectored, 64 byte line size)

Mainboard
Bus(es) : ISA AGP PCI IMB USB FireWire/1394 i2c/SMBus
MP Support : 1 CPU(s)
MP APIC : Yes
System BIOS : American Megatrends Inc. 080009
Mainboard : ASUSTeK Computer Inc. P4C800-E
Total Memory : 511MB DDR-SDRAM

Chipset 1
Model : ASUSTeK Computer Inc 82875P Memory Controller Hub
Front Side Bus Speed : 4x 282MHz (1128MHz data rate)
Total Memory : 512MB DDR-SDRAM
Memory Bus Speed : 2x 188MHz (376MHz data rate)

 

[rpr]

By the way, everything has been at 2.5, 4, 4, 7, 4 timings (including the 406DDR). I haven't tried to tighten the timings (yet).

 

[Soulkeeper]

looks good

 

[hytek369]

Originally posted by: rpr
DDR voltage is at 2.85v. I just topped out at about 406Mhz.

you have some crazy fast PC2100 ram

 

[Rafael]

Very nice!

BTW, just curious, what happened to the GeIL PC4000?

Raf

 

[rpr]

The Geil PC4000 ran fine at the rated DDR500 speeds, but I got MemTest86 errors at anything over 510. So in order to keep my CPU at it's max, I had to run the Geil at 5:4.

Actually the Geil is my second try at PC4000. I also had a pair of Kingston HyperX PC4000. They gave me MemTest86 errors at anything over DDR506.

In addition, both the Kingston and the Geil seemed to give me some stability issues. With the Geil and Kingston, I would get Prime 95 errors at anything over 3.2Ghz (regardless of the DDR speeds/timings). So at the time, I figured that was just the top end for my CPU. However, I am now at 3.4Ghz with the PC2100 Crucial and I have not had any errors with Prime 95 all day.

Very strange!

 

[Rafael]

Interesting!

What are you running? I bet it's not the system in your sig! Hehehehehehehe
Saying it's running @ 3.4 Ghz it's a P4. But what mobo?

Are you gonna try GeIL again? Have you tried OCZ?

Raf

 

[Elcs]

0206 1-1
MT 46V32M8
TG -75 B

Will be checking it out soon.

Upon looking.... on the Crucial sticker, I see BH11185 1R .... Just throwing up a theory here, BH-5 chips?

EDIT: If you find a Micron sticker on your stick, check out http://download.micron.com/pdf/guide/modguide.pdf page. I checked and my sticker says MT16VDDT646AG-265B1. Pc2100 speed.

EDIT2: Posted, into Windows, 166mhz 6-3-3-2.5.... dont know how stable it is but it looks it.

 

[jkj]

I was wondering about this too ive got some pc2100 laying around I may give a try

 

[Corporate Thug]

thats a ridiculous OC, i wonder if crucial pc2700 will go to 3200...

 

[FPSguy]

Originally posted by: shady06
thats a ridiculous OC, i wonder if crucial pc2700 will go to 3200...

I took my Crucial PC2700 to 190MHz with decent timings (I can't remember the exact timings, but I think it was something like 2.5-3-3-6). I didn't try to push it farther than that. I think it would have gone higher, though.