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11 Posts
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1505
October 3rd, 2017 07:00
xps 720 h2c memory issue.
evening guys (and gals)
ive hand built my rig from spare parts from here and ther, bee running for about 2 years slight hiccups 1 board death.
my current system stands as
Intel Core 2 Extreme QX6850
Code Name Kentsfield
Package Socket 775 LGA
Technology 65nm
Specification Intel Core2 Extreme CPU Q6850 @ 3.00GHz
Rated Bus Speed 1331.7 MHz
Stock Core Speed 3000 MHz
Stock Bus Speed 333 MHz
Total memory slots 4
Used memory slots 2
Free memory slots 2
Memory
Type DDR2
Size 4096 MBytes
Channels # Dual
DRAM Frequency 399.5 MHz
CAS# Latency (CL) 5 clocks
RAS# to CAS# Delay (tRCD) 5 clocks
RAS# Precharge (tRP) 5 clocks
Cycle Time (tRAS) 18 clocks
Bank Cycle Time (tRC) 23 clocks
Command Rate (CR) 2T
Physical Memory
Memory Usage 64 %
Total Physical 3.00 GB
Available Physical 1.06 GB
Total Virtual 5.99 GB
Available Virtual 3.05 GB
SPD
Number Of SPD Modules 2
Slot #1
Type DDR2
Size 2048 MBytes
Manufacturer Crucial Technology
Max Bandwidth PC2-6400 (400 MHz)
Part Number BL25664AA106A.16FH
Serial Number 2248267673
Week/year 165 / 165
SPD Ext. EPP
Slot #2
Type DDR2
Size 2048 MBytes
Manufacturer Crucial Technology
Max Bandwidth PC2-6400 (400 MHz)
Part Number BL25664AA106A.16FH
Serial Number 2115370453
Week/year 165 / 165
SPD Ext. EPP
my memory modules are rated at 1066MHz, and have 2 of making 4Gb.
why is bandwidth showing they are pc2-6400 400MHz???
if someone can solve please, causing major bottleneck for my games.
many thanks in advance.
im sorta new to trying to clock. nethermind an xps....
-will
RoHe
10 Elder
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45.2K Posts
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October 3rd, 2017 13:00
What app are you using to get those stats?
Apps like CPU-Z typically don't include the clock modifier that has to be considered after they report results. So if your RAM is showing at 400 MHz, with a "2" modifier, that's 800 MHz speed.
And just because your bought 1066 MHz RAM, that doesn't mean your system can run RAM at its rated speed. It depends on the motherboard and chipset. Assuming this is a Dell 720 h2c board, it's limited to 800 MHz RAM so your 1066 MHz RAM is being clocked down to 800.
You didn't say what OS you're running, but if you have a 64-bit version, you can increase RAM to a max of 8 GB which should help improve things. (A 32-bit OS can only address 4 GB max, so any more than that would be wasted.)
RoHe
10 Elder
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45.2K Posts
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October 3rd, 2017 13:00
BTW: You might try updating BIOS and the chipset driver to see if it will allow the system to use 1066 MHz RAM at its rated speed...
skdz
11 Posts
0
October 6th, 2017 17:00
The mobo is the H2C configuration yes, running 64-bit windows 7 premium sp1
the memory timings are also 5-5-5-18-23
if that makes any more sense or use..
-Will
skdz
11 Posts
0
October 6th, 2017 17:00
hi, thanks for replying, as fart as im aware, i have drivers and the like all up to date as when built 2 years ago.
My results were obtained via piriform's speccy, i do have cpu-z too, as been comparing the two. the modifyier you mentioned, would that have anything to do with memory command rate? which i currently have set on 2T clock, and seclected it to use the EPP/SLI profile on the memory modules.
Im kinda new to messing with memory speeds, never really had any issues like this before with other basic machines, a step in the dark so to speak
RoHe
10 Elder
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45.2K Posts
0
October 7th, 2017 19:00
The RAM speed reported by Speccy also has to be multiplied by 2, the clock multiplier. So your 1033 MHz RAM is running at 800 MHz because that's the max speed allowed by this motherboard and chipset.
The latest version of BIOS is A06. Dell doesn't support Win 7 on this model and doesn't offer a chipset for that OS. So what chipset did you install, if any, or did Win 7 install one that's built into the OS?
Probably not likely that updating either of those will let your 1066 RAM run at its rated speed, so as of now, your PC is working at it's max. The best you can probably do is increase RAM to a total of 8 GB, which is the max that this motherboard can support.
If your games are running too slowly, maybe it's time for a whole new PC? Just saying...