i bought two memory sticks from market to make my old pc a little faster.
Now i have a 1gb+1gb+1gb+1gb configuration running at 800mhz dual channel.
Note that i already had 1gb+1gb installed and i could not throw them away.
Now the memory i had is this
and the new memory i bought is this one
they are different because my first memory is out of market so i had to buy these.
Now i used both transcend in channel 1 and both kingston in channel 2.
They worked fine and were stable but i noticed a little lag. Then CPU z showed this
My memory speed turned to 667 Mhz without any reason.
Then i changed the system memory multiplier to 3.00a and it turned 800 again
Now when i had the 2 gb ram i did not need to do that and system automatically turned to 800 mhz
But even it turned to 800mhz i was not sure that if my speed increased or decreased So i ran several benchmarks on pc. Nova3 benchmark showed that my memory performance went to 2959MB/s
so i tweaked the performance enhance to good which turned memory speed to 3450MB/s
and then to extreme which turned memory speed to 3686MB/s
but while performing the same test in 2gb mode i found score more than 3700MB/s
But using the Maxxmem shows different result
when using 4 gb setup it shows that the latency is reduced than 2 gb setup
and it also show that the write is very slower than read which was almost identical in 2 gb setup around 5880MB/s which was reduced to 5570MB/s. but the read increased about 100MB/s.
Now i am very confused
how do i precisely know if my performance increased or decreased. i have the Performance Test 8.0 , NovaBench3 and Maxxmem 1.9 to evaluate my performance . But all of them show different result.
Please help me.
And Please can you help me choosing the correct cas etc speed.
Thanks in advance.
Nb: i do want to overclock.
My detailed configuration
1 ID = 0
Number of cores 2 (max 2)
Number of threads 2 (max 2)
Name Intel Core 2 Duo E7400
Specification Intel(R) Core(TM)2 Duo CPU E7400 @ 2.80GHz
Package (platform ID) Socket 775 LGA (0x0)
Extended CPUID 6.17
Core Stepping R0
Technology 45 nm
TDP Limit 65 Watts
Core Speed 2800.2 MHz
Multiplier x FSB 10.5 x 266.7 MHz
Rated Bus speed 1066.7 MHz
Stock frequency 2800 MHz
Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, EM64T
L1 Data cache 2 x 32 KBytes, 8-way set associative, 64-byte line size
L1 Instruction cache 2 x 32 KBytes, 8-way set associative, 64-byte line size
L2 cache 3072 KBytes, 12-way set associative, 64-byte line size
FID/VID Control yes
FID range 6.0x - 10.5x
Max VID 1.288 V
CPU Thread 0
APIC ID 0
Topology Processor ID 0, Core ID 0, Thread ID 0
Max CPUID level 0000000Dh
Max CPUID ext. level 80000008h
Cache descriptor Level 1, D, 32 KB, 1 thread(s)
Cache descriptor Level 1, I, 32 KB, 1 thread(s)
Cache descriptor Level 2, U, 3 MB, 2 thread(s)
Memory performance should be slightly less as you now have 4 modules, but the system should be faster if 2GB wasn't enough and swapping occurred. Set the timings to the slowest modules (the old ones), i.e., 6-6-6-18. You could also try 5-6-6-18 or even 5-5-5-18 if you increase voltage a bit (1.9v), but run memtest86+ for several hours to make sure the modules are stable.