RAM at 166mhz!!!! Am I completely ignorant or am I doing something wrong??

**SubZero** · 08-21-2003, 08:35 AM

Ok, my FSB is at around 140... pretty much stock. When I check my specs with cpu-z it says my 400Mhz Twinx memory is running at about 166 mhz!! :eek:

What's up with that???

I think my cpu has a locked multiplier of 12 but is there any way I could get more juice our of my high priced (€ 700) memory and system??

Nevery really looked at those stats and my system seemed to perform fine (especially over my old 733eb).

**k0NG0** · 08-21-2003, 09:05 AM

166MHz DDR = 333MHz data rate = DDR333. The P4PE's i845PE supports DDR333 tops (DDR400 works, but is essentially OCing).

Are you using a memory divider other than 1:1?

-kONGO

**SubZero** · 08-21-2003, 10:04 AM

Ah yes...

I think I'm now running at 1:1... At least I remember CPU-Z saying I did but I also seem to be running at a 4:3 ratio or something...

What setting would seriously be tampering my performance? Is it better to have a 1:1 devider?

**k0NG0** · 08-21-2003, 10:13 AM

Bah, I was delerious before.

The i845PE supports DDR333 for the P4Bs, which actually means a 4:5 ratio, since the FSB is 4 x 133MHz and thus the memory would be at (5/4) x 133MHz = 166MHz or DDR333.

Using 1:1 with the P4Bs would actually be running at DDR266 or PC2100 speeds, when you can actually run at PC2700 speeds default.

I created this little chart the other day.

-kONGO

**SubZero** · 08-21-2003, 10:45 AM

Thanks but I still don't get how I can get the full potential out of my system?

Maybe now I am delerious??

Maybe I left my brain at home...

**k0NG0** · 08-21-2003, 10:50 AM

Check out what memory dividers the BIOS offers. I would suspect something like 1:1, 4:5 and 5:4 and maybe others too. Choose one that will make your RAM go as fast as possible (4:5 will run the memory at DDR333 speed when your CPU is at stock speeds).

Then there's always overclocking

.

-kONGO

**SubZero** · 08-21-2003, 12:08 PM

I'l poke around in the bios but I'm sure there is no devider option. . I can manually choose 355, 367, etc... I guess this Basicly comes down to the same thing.

Anyway, whatever I change in the bios, either increase the FSB or anything else it hardly has any effect on benchmark performance. I had it running at 3.2 ghz before and I didn't notice the difference.

PeterT · 08-22-2003, 08:34 PM

Quote:

Originally posted by kONGO
I created this little chart the other day.
-kONGO

That's a handy little chart! Thanks Kongo!

08-21-2003, 08:35 AM	#1
SubZero Moderator Join Date: Feb 2001 Location: Below sealevel Posts: 9,665	RAM at 166mhz!!!! Am I completely ignorant or am I doing something wrong?? Ok, my FSB is at around 140... pretty much stock. When I check my specs with cpu-z it says my 400Mhz Twinx memory is running at about 166 mhz!! :eek: What's up with that??? I think my cpu has a locked multiplier of 12 but is there any way I could get more juice our of my high priced (€ 700) memory and system?? Nevery really looked at those stats and my system seemed to perform fine (especially over my old 733eb). __________________ Main Rig: Asus P5K \| Intel Core Quad Q6600 \| Corsair XMS 6400-4gig eVGA GeForce 8800 GTX KO ACS3 \| X-Fi ExtremeMusic \| Z-5500D OCZ GameXstream 850W \| ThermalTake Aguila \| Logitech G-15 Logitech MX1000 \| Synology DS-207+ NAS (2x500WD-SATA2-RAID0)
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08-21-2003, 09:05 AM	#2
k0NG0 Remembering TQ Join Date: Mar 2001 Location: Sweden Posts: 13,638	166MHz DDR = 333MHz data rate = DDR333. The P4PE's i845PE supports DDR333 tops (DDR400 works, but is essentially OCing). Are you using a memory divider other than 1:1? -kONGO __________________ Use Firefox - "the one that blocks all the schmutz" Feeling multicore elation? Remember this correlation: Amdahl's Law.
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08-21-2003, 10:04 AM	#3
SubZero Moderator Join Date: Feb 2001 Location: Below sealevel Posts: 9,665	Ah yes... I think I'm now running at 1:1... At least I remember CPU-Z saying I did but I also seem to be running at a 4:3 ratio or something... What setting would seriously be tampering my performance? Is it better to have a 1:1 devider? __________________ Main Rig: Asus P5K \| Intel Core Quad Q6600 \| Corsair XMS 6400-4gig eVGA GeForce 8800 GTX KO ACS3 \| X-Fi ExtremeMusic \| Z-5500D OCZ GameXstream 850W \| ThermalTake Aguila \| Logitech G-15 Logitech MX1000 \| Synology DS-207+ NAS (2x500WD-SATA2-RAID0) Last edited by SubZero : 08-21-2003 at 10:42 AM.
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08-21-2003, 10:13 AM	#4
k0NG0 Remembering TQ Join Date: Mar 2001 Location: Sweden Posts: 13,638	Bah, I was delerious before. The i845PE supports DDR333 for the P4Bs, which actually means a 4:5 ratio, since the FSB is 4 x 133MHz and thus the memory would be at (5/4) x 133MHz = 166MHz or DDR333. Using 1:1 with the P4Bs would actually be running at DDR266 or PC2100 speeds, when you can actually run at PC2700 speeds default. I created this little chart the other day. -kONGO __________________ Use Firefox - "the one that blocks all the schmutz" Feeling multicore elation? Remember this correlation: Amdahl's Law.
(Offline)

08-21-2003, 10:45 AM	#5
SubZero Moderator Join Date: Feb 2001 Location: Below sealevel Posts: 9,665	Thanks but I still don't get how I can get the full potential out of my system? Maybe now I am delerious?? Maybe I left my brain at home... __________________ Main Rig: Asus P5K \| Intel Core Quad Q6600 \| Corsair XMS 6400-4gig eVGA GeForce 8800 GTX KO ACS3 \| X-Fi ExtremeMusic \| Z-5500D OCZ GameXstream 850W \| ThermalTake Aguila \| Logitech G-15 Logitech MX1000 \| Synology DS-207+ NAS (2x500WD-SATA2-RAID0)
(Offline)

08-21-2003, 10:50 AM	#6
k0NG0 Remembering TQ Join Date: Mar 2001 Location: Sweden Posts: 13,638	Check out what memory dividers the BIOS offers. I would suspect something like 1:1, 4:5 and 5:4 and maybe others too. Choose one that will make your RAM go as fast as possible (4:5 will run the memory at DDR333 speed when your CPU is at stock speeds). Then there's always overclocking . -kONGO __________________ Use Firefox - "the one that blocks all the schmutz" Feeling multicore elation? Remember this correlation: Amdahl's Law.
(Offline)

08-21-2003, 12:08 PM	#7
SubZero Moderator Join Date: Feb 2001 Location: Below sealevel Posts: 9,665	I'l poke around in the bios but I'm sure there is no devider option. . I can manually choose 355, 367, etc... I guess this Basicly comes down to the same thing. Anyway, whatever I change in the bios, either increase the FSB or anything else it hardly has any effect on benchmark performance. I had it running at 3.2 ghz before and I didn't notice the difference. __________________ Main Rig: Asus P5K \| Intel Core Quad Q6600 \| Corsair XMS 6400-4gig eVGA GeForce 8800 GTX KO ACS3 \| X-Fi ExtremeMusic \| Z-5500D OCZ GameXstream 850W \| ThermalTake Aguila \| Logitech G-15 Logitech MX1000 \| Synology DS-207+ NAS (2x500WD-SATA2-RAID0)
(Offline)

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