Overclocking Results for Acer Aspire 1694
this article is an extension of the main review for the Acer Aspire 1690 Series
Warning, overclocking anything is dangerous, especially on laptops, if you are at all unsure about doing it, DON’T. If you do, then take extreme care with temperatures! Overclocking may void the warranty and I can take no responsibility if something goes wrong, you overclock at your own risk.
Down to the numbers. The X600 comes clocked at 400mhz core and 250mhz (500mhz effective) memory clock. During testing I found the maximum core clock to be 575 for 3dmark 2k1 and 567 for the rest which is very reasonable. The memory did not fare so well and only reached 300mhz (600mhz effective) but still gives a boost to memory bandwidth.
As with all Pentiums the multiplier is locked upwards (but unlike others not downwards). The PCI Express bus has been linked to the FSB to limit overclocking so that would always be a wall. During testing I found a FSB of around 155mhz to be the max reachable which gave a final CPU speed of around 2.3ghz which was stable. This is impressive for a laptop chip with no increase in voltage.
The benchmarks became as follows:
- Super pi: 34 seconds (compared to 40 seconds)
- 3DMark05: 2,093 (compared to 1,300)
- 3DMark03: 4,724 (compared to 3,624)
- 3DMark 2k1: 16,444 (compared to 12,783)
Impressive increases all around. The super Pi time is becoming competitive with the AMD fx 53-55 while for the mobile 9600/9700/x600 series which are all based off the same chip, the Acer takes first place in all the 3dmarks. Certainly impressive numbers, what’s also impressive is the thermal solution never struggled with the extra heat and heat was never a problem, so a thumbs up to Acer’s thermal design.
So how is this done? Well delving into the cover with the vent reveals some of the reason:
A dedicated copper heat spreader and heat pipe for the CPU along with doing away with the habit notebook manufacturers have got into sharing the main CPU heat sink with the graphics.
Taking off the heat sink only requires removing 3 screws and all comes away revealing the CPU and thermal pad used (I have replaced this with thermal compound).
Turning the screw on the socket releases the CPU, as long as the system accepts it, upgrading the CPU on this notebook would be a piece of cake.
The middle cover reveals the wireless, the NB heat sink and both memory modules, the lower one is tricky to get to, but looping a little bit of wire or string round the corner and pulling it up works really well. The other cover is for the HDD.