Upgrade GPU or CPU first?

[Raiden60]

This build:

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Pentium G3258 3.2GHz Dual-Core Processor  (£50.34 @ Aria PC)
Motherboard: MSI Z97 U3 Plus ATX LGA1150 Motherboard  (£74.00 @ Amazon UK)
Memory: Crucial 8GB (2 x 4GB) DDR3-1600 Memory  (£49.52 @ Amazon UK)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive  (£42.95 @ CCL Computers)
Video Card: MSI Radeon R7 260X 2GB Video Card  (£89.99 @ Novatech)
Case: Zalman Z3 Plus ATX Mid Tower Case  (£26.99 @ Amazon UK)
Power Supply: EVGA 500W 80+ Bronze Certified ATX Power Supply  (£39.81 @ Amazon UK)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer  (£10.50 @ CCL Computers)
Wireless Network Adapter: TP-Link TL-WN751ND 802.11b/g/n PCI Wi-Fi Adapter  (£9.59 @ Aria PC)
Monitor: BenQ GL2250HM 60Hz 21.5" Monitor  (£89.98 @ Amazon UK)
Keyboard: Zalman ZM-K400G Wired Gaming Keyboard  (£17.98 @ Scan.co.uk)
Total: £501.65

 

Should I upgrade the CPU to an i5-4690k or add another R9 260X in crossfire?(Don't say anything about the downsides of upgrading or crossfire please)

[Guest]

I'd Upgrade CPU to the i5 you are getting a double of cores which will effect performance!

[Shhuks]

I would sell the 260x and go for a better single card. 280s are so cheap now. 

[MLGNOSCOPEHEADSHOTGETREKT]

CPU.Half of today's games can't run on a Dual core.Get a i5-4460 or something along the lines of i5.

[Blackie Sheen]

I wouldsay gpu because that pentium probably does not bottleneck that 260x and then upgrade the cpu to avoid bottlenecks in very demanding games

[Vek1313]

Get an i5 4690k and sell the r7 260x and get a R9 270x or 280(x) if you can afford the 280(x)

[Dzzope]

Cpu then sell the 260 and get a bigger single card

[TheDev]

sell the card you have now, buy a i5 4xxx and get a r9 2xx card the 280 is cheap at the moment 

[Raiden60]

Ok. I'll take all of your advice in consideration. However CPU will be priority.

[AliveGhost13]

I would say GPU tbh, and clock the nuts off the CPU. Should do 4.5 easily

[MoonDoggy-X]

Do you already have these parts, or is this just a potential build? If this is a computer that is already built, then go with the gpu. You will see more of a gain. However, if this system is not built yet, go with the better cpu now. It'll be a lot easier to pick up another gpu for crossfire later on than it would be to upgrade the processor.

[CostcoSamples]

For better performance today, the GPU will give you the best upgrade.  BUT, consider the long term.  If this rig must last 3 to 5 years, I suggest upgrading the CPU first because when the next gen of CPU's are released, they usually have a different socket, meaning you can't upgrade without also getting a new motherboard.  Also, next gen CPU's will move to DDR4 RAM, so that adds even more to the cost of the CPU upgrade.  If you upgrade your CPU today, you keep the same motherboard and RAM, and the 4690k will give you enough power to last you through 3 to 5 years easily.  It is much easier to swap out your GPU every year or two, and keep the rest of the system.