OverclockersUK ‘Infinity Vesuvius’ R9 295X2 QuadXFire System review

The OverclockersUK “Infinity Vesuvius” system arrives in a very large box with company branding on all sides. Inside, the system is shipped in the Corsair Obsidian 750D Tower case box. It was good to see that Overclockers UK included the Asus Z87 Maximus VI Extreme ATX motherboard box with all the left over cables, discs and literature.

OCUK are using the ultra high end Silverstone Strider 80+ Silver 1,500W power supply, and it uses a slightly different power cable – also included in the box. Be careful not to misplace this, as a standard power cable will not fit. OCUK pack the insides of the system with blue foam to protect the graphics cards during shipping – it is important this is removed before powering the system on.

There is no doubt that the Corsair Obsidian 750D is a ‘looker'. It ships with a very large side windowed panel to show off the lovely internal build.

Along the top of the unit is the I/O panel featuring the power button, headphone and microphone ports, alongside 2x USB 3.0 and 2X USB 2.0 ports. Directly underneath is the Asus ROG OC Panel. There is no ‘Overclockers UK' branding on the front, just the Corsair logo along the bottom of the case.

The system we reviewed today ships with a 4.7ghz clock speed, although due to the heat and variance when overclocking a Haswell processor, OCUK do mention ‘overclocked to at least 4.6GHz' on the “Infinity Vesuvius” system page. As a side note, KitGuru's three 4770k engineering samples are relatively poor overclockers, hitting between 4.5ghz and 4.6ghz – so we can understand why OCUK list this.

Each R9 295X2 is cooled by a 120mm radiator and we can see they are both fitted at the front of the chassis, with fans positioned to intake. It is worth pointing out that the liquid inside the R9 295X2 radiators will get warm under load, so the intake air won't be entirely cool by the time it leaves the radiator to hit the rest of the system components behind it. Not ideal – but as the 4770k is cooled by the Corsair H105, fitted to the top of the Obsidian 750D – OCUK were out of options.

The Corsair Obsidian 750D ships with a removable dust filter so getting access to the two 120mm fans is easy enough. Handy if you want to clean them without removing the radiators.

The Asus Z87 Maximus Extreme is one of the best motherboards that money can buy – we reviewed it in August 2013 and it won our top award, you can read the indepth review here.

We have no complaints with the build – OCUK have neatly routed all the cables from the monster 1,500W Silverstone power supply.


The whole system is coordinated in red and black and looks great – with matching Corsair Vengeance Pro memory. The silver accenting on the R9 295X2 heatsinks give the build a little ‘depth' too.

The Silverstone Strider 80+ Silver 1,500 watt power supply has been selected to power the “Infinity Vesuvius” system. We will test power consumption later in the review, but clearly selecting such a powerful unit for this system was a wise move.

No optical drive is fitted inside the system which is no great loss. OverclockersUK have fitted the ROG OC panel here, along with the 2TB Seagate Barracuda drive and 500GB Samsung 840 EVO SSD. If you need a bluray optical drive then you could always buy an external USB drive – for around £60.

The other side of the chassis is home to many of the cables, shown above. OCUK are using black and red braided cabling so the ugly standard power supply cables can be hidden easily enough out of sight.

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