How to overclock my DDR2 -800 RAM.Please help.

[Pavin]

Hi guys,

I wanted to increase the performance of my ram by oc'ing it.

I haven't oc'd my processor since its not possible with an Intel DG43NB mobo of mine.

My FSB is at 333 MHz now (stock - cannot be changed in my case .So, should I make my DRAM from the current 333 to 400 MHz? Also any info on tweaking h memory timings would be greatly helpful.

My RAM info is :


RAM
Memory slots
Total memory slots 4
Used memory slots 2
Free memory slots 2
Memory
Type DDR2
Size 4096 MBytes
Channels # Dual
DRAM Frequency 332.9 MHz
CAS# Latency (CL) 5 clocks
RAS# to CAS# Delay (tRCD) 5 clocks
RAS# Precharge (tRP) 5 clocks
Cycle Time (tRAS) 15 clocks
Command Rate (CR) 2T
Physical Memory
Memory Usage 37 %
Total Physical 3.00 GB
Available Physical 1.87 GB
Total Virtual 5.99 GB
Available Virtual 4.77 GB
SPD
Number Of SPD Modules 2
Slot #1
Type DDR2
Size 2048 MBytes
Manufacturer Kingston
Max Bandwidth PC2-6400 (400 MHz)
Part Number
Serial Number 48CC1C66
Week/year 10 / 09
SPD Ext. EPP
JEDEC #3
Frequency 400.0 MHz
CAS# Latency 6.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 18
tRC 24
Voltage 1.800 V
JEDEC #2
Frequency 333.3 MHz
CAS# Latency 5.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 21
Voltage 1.800 V
JEDEC #1
Frequency 266.7 MHz
CAS# Latency 4.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 12
tRC 16
Voltage 1.800 V

Slot #2
Type DDR2
Size 2048 MBytes
Manufacturer OCZ
Max Bandwidth PC2-6400 (400 MHz)
Part Number OCZ2G8002G
SPD Ext. EPP
JEDEC #3
Frequency 400.0 MHz
CAS# Latency 5.0
RAS# To CAS# 5
RAS# Precharge 5
tRAS 18
tRC 24
Voltage 1.800 V
JEDEC #2
Frequency 333.3 MHz
CAS# Latency 4.0
RAS# To CAS# 5
RAS# Precharge 5
tRAS 16
tRC 21
Voltage 1.800 V
JEDEC #1
Frequency 266.7 MHz
CAS# Latency 3.0
RAS# To CAS# 4
RAS# Precharge 4
tRAS 12
tRC 16
Voltage 1.800 V

Thanks.

 

[redduc900]

You have mismatched DDR2-800 modules being Kingston rated at what looks like 6-6-6-18-24 at 1.8V, and OCZ rated at 5-5-5-18-24 and 1.8V. So change the DRAM frequency to DDR2-800 (400MHz) and the timings to 6-6-6-18-24 at 1.8V.

 

[Pavin]

So changing my memory timings to 6-6-6-18-24 at 1.8V and also putting my DRAM at 400 MHz thereby using the asynchronous mode and the FSB:RAM divider 5:6,will I gain more performance? Also will increasing the voltages have any effect on performance.

P.S. Even though I have mismatched Ram's I have never encountered any BSOD problems while gaming or memory testing.

 

[redduc900]

Any performance gain going from DDR2-667 at 5-5-5-15/18 to DDR2-800 w/ looser timings of 6-6-6-24 will be minimal at best. And no, there won't be any performance gain by raising the DRAM voltage alone.

 

[Pavin]

So, how about going from DDR2-667 at 5-5-5-15 to DDR2-800 5-5-5-15?

Can you please tell me how to make the best use of my RAM,ie, the best OC to do on this.What else should I do to gain performance if I increase my DRAM voltage. Its at 1.8 V now and it can safely go up to 2.1 V.

Thanks for the help.

 

[trents]

You are straining at a gnat. Any performance gain accrued from this undertaking will probably not be noticeable even if it is possible to make your ram run faster and still be stable. The part the ram speed plays in overall system performance is pretty small as long as the amount of ram is sufficient.

 

[Pavin]

Thanks and btw I have my two sticks at 400 MHz at 1.8 V and timings are 5-5-5-15

 

[trents]

Are they running in dual channel mode or single channel mode. Check the CPU-z "Memory" tab upper right hand corner.

 

[Pavin]

These are the info from CPU-Z

Channels# - Dual
DC Mode - Symmetric

DRAM frequency - 399.0MHz
FSB : DRAM - 5:6

Timings > 5-5-5-15

Are these okay?

 

[Pavin]

Bump

 

[djscrew]

is what okay?

if it works, it works...

 

[Pavin]

I did the memory testing by windows and it seems to perfectly fine. Thanks.