For a low end spec like that, you would be better off finding a VPS more stable than old lower end dedicated server.
I strongly suspect he's looking for a box for a gameserver for something memory-hungry, rather than CPU-intensive. The cheapest place I can think of to get a 4GB machine with 10Mbit would be Joe's - the 2GB Opteron is $60/mo with 4GB memory and 10Mbit unmetered. WII might offer an Atom at the same price, if their boards support 4GB ($50 for 2GB, $10 for another 2GB). Burst offer 4GB VPSes for $10 less, with 4TB transfer, but, well... they're Burst.
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