I've got around £600 to slosh around, but if I don't need to spend all that then I happily won't.
So my specs are;
AMD Phenom II X6 1090T (Overclocked to 3.6GHz on stock cooler )
ASUS M4A88TD-M EVO
3x2GB XMS 3 1333MHz RAM.
1TB HDD WD Corsair Blue
ZOTAC GTS 250 - This is probably my priority to upgrade
Then a terrible optical drive I don't care about
and A Wi-Fi and USB3 card I like..
i assume you are talking about upgrading for gaming? what resolution do you game at?
your CPU, HDD, mobo and RAM is fine
you can obviously upgrade your GPU for a better gaming performance and if needed your PSU (you did not state what it is)
i would also get an aftermarket cooler. there are many choices from all in one liquid coolers (corsair H80, Antec 620, etc.,) to bargain coolers like the cooler master hyper 212+.
optical drives are starting to go the way of floppy drives with most software now installed digitally. if you can deal with it, i would not upgrade it unless you just feel like spending $20 on an OEM drive.
Also, someone said something about AMD chips only like dual channel RAM..? So would getting an identical stick to the other 3 and putting it in create 2 dual channels and work nicely,..?
yes and no, yes you would be back in dual channel since you only have one stick in your second channel. would you see any real world difference and a big jump in game FPS? not really. but DDR3 ram is so cheap now, if you are willing to spend the money you may as well get it.
if anything I'd have 8gb instead of 6... and it's only about £10 now so I'll go for it..
I want to spend about £250-£300 on a graphics card for gaming. Any ideas?
Opinion on watercooling?
*you need a 120mm port (or more) for an all-in-one cooler. correct me if I'm wrong but doesn't the A30 have 1 - 90mm front, 1 - 230mm top, and 2- 60mm rear fans?
graphic card wise you would be in the AMD 6950-6970 range. With Nvidia you would be looking at the GTX570. All are good, depends on on weather you want to spend closer to 250 or to 300. I would personally go with the Nvidia GTX570 but I tend to lean more to Nvidia. the AMD are also very good and I do own an AMD gpu in one of my PCs, performs great.
I assume you mean all-in-one water cooling since you have a rather tough case to install a full water kit for a person new to water cooling. all-in-ones are fine but they cost more then air cooler and offer similar performance. they also create the same noise since both rely on a fan to disperse heat. you can eaily get the same performance and noise from a CM 212+ @$30 that you can get from a corsair H60 @$70. if having a water cooled CPU sounds cool and you are willing to spend the money, they perform well and most are not very loud.
If you have the room and clearance I do suggest getting the biggest air cooler you can. I have a Scythe Ninja 3 which is awesome in terms of price/perf. I somehow got the impression you couldn't fit a proper aftermarket air cooler... But if going w/c here's the Antec I mentioned http://www.newegg.com/Product/Product.aspx?Item=N82E168... I believe it offers the best bang for buck in its segment. Depending on your case it might fit in the top or rear fan slot.
Well, that's for you to decide. You need to read up on SSDs. Look up some reviews on this site, Reviews->Storage. The 600MBps on your HDD is continuous sequential reads. SSD won't speed up that so much (f.ex. copying a DVD.iso) but it will speed up most other reads and especially writes.