dual ram

freekhead

Hello all. got a wee problem with the speed my ram is running at
im running a
p4 3Ghz
asus p4c800-e delux mb
2 matched Corsair PC3200 DDR 512MB
using a prog called cpu-z it states the frequency of each ram is 200Mhz

ere's a print out from the prog:

---

Module #1

General
Memory type DDR-SDRAM
Manufacturer (ID) (0000000000000000)
Size 512 MBytes
Max bandwidth PC3200 (200 MHz)
Part number

Attributes
Number of banks 2
Data width 64 bits
Correction None
Registered no
Buffered no

Timings table
Frequency (MHz) 200
CAS# 2.5
RAS# to CAS# delay 3
RAS# Precharge 3
TRAS# 8


Module #2

General
Memory type DDR-SDRAM
Manufacturer (ID) (0000000000000000)
Size 512 MBytes
Max bandwidth PC3200 (200 MHz)
Part number

Attributes
Number of banks 2
Data width 64 bits
Correction None
Registered no
Buffered no

Timings table
Frequency (MHz) 200
CAS# 2.5
RAS# to CAS# delay 3
RAS# Precharge 3
TRAS# 8

---

Here is a list of the cpu spec:
APIC ID = 0
CPU Name Intel Pentium 4
Code Name Northwood
Specification Intel(R) Pentium(R) 4 CPU 3.00GHz
Family / Model / Stepping F 2 9
Extended Family / Model 0 0
Brand ID 9
Technology 0.13 µ
Supported Instructions Sets MMX, SSE, SSE2
CPU Clock Speed 3299.6 MHz
Clock multiplier x 15.0
Front Side Bus Frequency 220.0 MHz
Bus Speed 879.9 MHz
L1 Data Cache 8 KBytes, 4-way set associative, 64 Bytes line size
L1 Trace Cache 12 Kµops, 8-way set associative
L2 Cache 512 KBytes, 8-way set associative, 64 Bytes line size
L2 Speed 3299.6 MHz (Full)
L2 Location On Chip
L2 Data Prefetch Logic yes
L2 Bus Width 256 bits

---

Why is my FSB running at 220Mhz?

OfflerCrocGod

Because you have an overclocked chip? I dont understand what's the prob?. CPU-z works fine for me the 200Mhz figure is just what your RAM is *supposed* to be at.

astrofool

because pc3200 ram runs at 200mhz

OfflerCrocGod

Ye but the set-up is overclocked look at it 3Ghz at 3.3Ghz 15*220 gives 3.3Ghz.

Col_Loki

He's prob just running the ram "by spd" or with a divider.

To clarify, Your FSB base figure is 200mhz which is quad pumped by the motherboard to give you 800FSB in total.

DDR ram - Double Data Rate (i think thats it) , ie with a 200mhz FSB (base figure) your ram would be running @ 400mhz DDR or Pc3200 which is okie dokie.

Anima

What does "by spd" mean?

Col_Loki

by spd, by speed. Generally is suppose to mean that the motherboard runs the ram at the rated speed. Ie Pc3200 200mhz (400mhz DDR) , Pc2700 166mhz (333 DDR).....

Dempsey

What COL_LOKI said. Its 200MHz but Double Data Rate (DDR) means that it transferring twice the amount of data. Effectively making it 400Mhz but Intel CPU's have quad pumping so they run at 800Mhz. Im not 100% on how exactly the quad-pumping works but, ya setups seems fine mate. Does it seem to be running slow? What OS are you running and if its not XP or Linux turn off Hyper-Threading. Get Sandra and run some checks with that.

Anima

Is hyper threading anygood? Would it be worth going to xp for it?

Dempsey

Originally posted by [-=RaVeN=-]
Is hyper threading anygood? Would it be worth going to xp for it?

I asked the same question

Soon after I got XP Pro (Only because I was able to get it really cheap). I cant really tell ya if it was worth it as i still have to do some serious stuff with the machine. But going on those benchmarks. The difference at times can be significant.

Anima

Turning off HT really improved my performance

Thanks for the tip.

longword

Originally posted by COL_LOKI
by spd, by speed. Generally is suppose to mean that the motherboard runs the ram at the rated speed. Ie Pc3200 200mhz (400mhz DDR) , Pc2700 166mhz (333 DDR).....

Close but no cigar. SPD is Serial Presence Detect. Your DIMMs have a tiny little serial ROM on them which contains very detailed information about the RAM including its rated bus speed and CAS latency. It often details manufacturer, date of fabrication, and batch number.

Col_Loki

Fair enough , took for granted that SPD stood for speed.

In terms of what speed the memory runs at when set to this, is it not the same (ie Pc2700 will run @ 333mhz.... etc)?