windwithme

It¡¦s from USA 1st Tier memory company ¡V OCZ.
They are famous in elegant packing.
Of course they are striving for OC market.

My friend bought OCZ VX DDR500 from States.
VX is the series with Winbond chipset.
Golden Positive Pole Burnish heatsink.


Office Spec.
CL 2-3-3-8 at 2.6V(400MHz)
CL 2-2-2-8 at 3.3V(500MHz)

It looks must using DFI nF4 motherboard as the DRAM has 2 segments voltage.
If you want to bring into the full official spec, you need motherboard with 2.5~3.2V and 3.3~4V setup.

I am curious if the memory can work in DDR500 2 2-2-5 3.3V such high voltage and high temp environment with just adding heatsink.

Lets test it.

Examination:
Using 12X12 fan to low down the memory and motherboard temp.


DDR500 2 2-2-5 3.3V
MEMTEST 1.60
#5 in 10 loops is OK.


Removing 12cm fan form memory and leave 12cm system fan to keep convection.


DDR500 2 2-2-5 3.3V
MEMTEST 1.60
#5 appears the 1st error in 3rd loop.


4th got second fault, 5th got 5 faults, and so on.
After 10 loops, the error numbers are a lot.
It seems the heat increased make the system be unstable.

Using finger to touch the heatsink, I cannot stay even longer than 1 second. I think the temp is around 70~80¢J.
From here we can see, we do need an extra fan to make to system work stable during lone time usage.

Testing Configuration
AMD Athlon64 X2 4800+ 2.4G 1MB
DFI nF4 LANParty Ultra-D
OCZ Gold VX DDR500 + 12cm fan
Sunnystone latest water cooling head + Sunntstone dual fan heat-pipe + Eheim 1250 motor

Starting from 250X11=2750
The bandwidth is as below.




SUPER PI and CPUMARK performance test(I haven¡¦t shut down the permanent software, so the performance is lower.)



Advantage
1. Gorgeous heatsink
2. Guarantee DDR500 2 2-2-5 3.3V
3. Price drops from 270USD to 180USD to be more acceptable.

Disadvantage
1. Suggest adding extra coolers to keep system stable.
2. The voltage is too high, it requires special motherboard to reach the official spec. (This is Winbond characteristic, you don¡¦t need to be overcritical)

Since DFI nF4 provides DRAM voltage up to 4V, Winbond memory chip becomes popular in DDR500 optimized level.

This version is retail packing, it¡¦s just normal.
3.3V DDR500 with fan is stable.
3.3V DDR510, the OS is crashed.
Re-install XP and over-voltage to 3.4~3.5V DDR510, it shows blue screen.
Then try DDR400 2 2-2-5 2.7V, the same blue screen.
It looks very fit the spec.
CL 2-3-3-8 at 2.6V(400MHz)
CL 2-2-2-8 at 3.3V(500MHz)

2 months ago, friend bought a second hand 256MBX2 BH5 DDR400.
One is A-Data and 1 is GS. 3.3V DDR500 2 2-2-5 is very stable as well.
So if you have BH5 or DDR400 UTT and DFI nF4, you can try DDR500 3.2~3.5V, mostly can run

agent #2

Nice work.
What was the room temperature? You got your airco now right?

windwithme

4800+ 2.4G 1MB
250X11=2750MHZ


4200+ 2.2G 512K
250X11=2750MHZ


1MB is less MB/s than 512K in memtest

EX:
4000+ 1MB
FX 1MB
X2 1MB