Im not sure that there are SL36A processors manufactured in Singapore. Im assuming you want this for overclocking, in which case youre best off with an SL36A Malaysian anyways. You should be able to get those pretty much anywhere. Try pricewatch.
www.pricewatch.com
If not there, try TC Computers.
www.tccomputers.com
Either of those places should be able to help you.
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"In the computer industry, there are three kinds of lies;
lies, damn lies, and benchmarks."