Welcome to Tom's Forum!
I'm picky about RAM so I'll keep in mind what you already own.
There's no reason the Patriot value PSD34G13332 RAM won't work; DDR3 @ 1.50v with supported densities of 1GB, 2GB, 4GB, & 8GB / DIMM slot. If using (1) stick then keep it in one of the left most DIMM slots closest to the CPU; Blue would be my default DIMM slot.
IF you had two (2) 'Patriot value PSD34G13332' then Dual Channel will work, but DDR3 the differences between Single and Dual Channel is negligible ~<1%~3%.
Ideally, for Gaming the Sandy Bridge responds best to DDR3 1600 MHz CAS 8/9 in Matched Dual Channel Kits and in 4GB/stick density i.e. 2X4GB. My favorite SB gaming kit -> F3-12800CL8D-8GBXM http://www.newegg.com/Product/Product.aspx?Item=N82E16820231445
Nice article -> http://www.bit-tech.net/hardware/memory/2011/01/11/the-best-memory-for-sandy-bridge/1