Underpowered?

[TukayAway]

Hi guys,

I have ordered the following:
"Titan Machete" Intel Core i5 4690 @ 3.9GHz Turbo Nvidia GeForce Gaming PC £199.95 1 £199.95
CHOSEN OPTION
Standard Build Systems - Dispatched within 7 working days £0.00 1 £0.00
CHOSEN OPTION
24 MONTH WARRANTY - COLLECT & RETURN £0.01 1 £0.01
CHOSEN OPTION
Microsoft Windows 7 Home Premium SP1 64-Bit - OEM (GFC-02733) £61.66 1 £61.66
CHOSEN OPTION
BitFenix Comrade Midi-Tower - Black £24.99 1 £24.99
CHOSEN OPTION
Intel Core i7-4770K 3.50GHz (Haswell) Socket LGA1150 Processor - OEM £204.99 1 £204.99
CHOSEN OPTION
Seagate Barracuda 7200RPM 1TB SATA 6Gb/s 64MB Cache - OEM (ST1000DM003) HDD £33.32 1 £33.32
CHOSEN OPTION
No Second Hard Drive Option (ZERO Cost) £0.00 1 £0.00
CHOSEN OPTION
Gigabyte GeForce GTX 760 WindForce 3x OC 4096MB GDDR5 PCI-Express Graphics Card £179.99 1 £179.99

Just worried that the 450W power supply won't be enough? Let me know your thoughts, thanks in advance for any advice.

 

[TukayAway]

Thanks for the advice guys. I've rung customer services this morning and have asked to upgrade to a 750W unit. I might as well pay another £30 now rather than fork out at Christmas when I look for a SSD and better card.

Thanks again.