1600 Mhz of RAM is pretty much the baseline / standard today. It means that if you want to go for higher clock speeds of it, say, 1866 Mhz; you are paying extra money with no visible increase in speeds.
With this now said, depending on your budget, you can get the cheaper 2x8 Gigs of 1600 Mhz of Ram, and you wont be disappointed.
More expensive 1600 mhz of Ram are often plated with some sort of plate design. This serves the functionality of being able to touch the Ram without being scared of static electircity, and depending on how they look, are badass in your build. But you are paying for the looks at this point.
My biased favorite ram is this: PCPartPicker part list / Price breakdown by merchant
| Type | Item | Price |
|---|---|---|
| Memory | Crucial Ballistix Sport 16GB (2 x 8GB) DDR3-1600 Memory | $119.99 @ Adorama |
| Prices include shipping, taxes, rebates, and discounts | ||
| Total | $119.99 | |
| Generated by PCPartPicker 2015-03-07 05:41 EST-0500 |
No nick nacks, some stealth plating, no bullshit. Its in dollars, so 32 gigs of these might translate to ~160-180 Pounds.
For your desired pricepoint of 150 punds; PCPartPicker part list / Price breakdown by merchant
| Type | Item | Price |
|---|---|---|
| Memory | G.Skill Value 16GB (2 x 8GB) DDR3-1600 Memory | £73.01 @ Dabs |
| Memory | G.Skill Value 16GB (2 x 8GB) DDR3-1600 Memory | £73.01 @ Dabs |
| Prices include shipping, taxes, rebates, and discounts | ||
| Total | £146.02 | |
| Generated by PCPartPicker 2015-03-07 10:46 GMT+0000 |
These will do the job quite nicely. But they have a higher CAS LATENCY than higher priced RAM sticks.
CAS LATENCY wikipedia~is the delay time between the moment a memory controller tells the memory module to access a particular memory column on a RAM module, and the moment the data from the given array location is available on the module's output pins.
Gave a lot of info here. Hope it helps ( I did post the Value memory in pounds this time)