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Scan 3XS P55 OC review

Our Rating :
Price when reviewed : £1142
inc VAT

The 3XS is perfect if you want power without any hassle, but it lacks a Blu-ray drive, and the monitor is smaller than we'd expect.


3.67GHz Intel Core i5-750, 4.000000 RAM, 22in 1,920×1,080 display, Windows 7 Home Premium 64-bit


If your top priority when choosing a Windows 7 PC is performance, Scan’s 3XS P55 OC should be near the top of your list.

It may have the same Intel Core i5 750 as many of its rivals, but Scan has squeezed every last ounce of power out of it through overclocking. This makes it the fastest Core i5 PC we’ve ever reviewed, running at 3.67GHz, 400MHz faster than the maximum turbo boost speed of this processor.

Unsurprisingly for an overclocked PC, a huge cooler dominates the compact case. All fans are remarkably quiet, though, and the 3XS is barely audible when idle. Unfortunately, the cooler renders one of the PCI-E x1 slots useless and because the 120mm fan sits right over the top of the memory, you’ll have to refit it if you want to install extra RAM into the spare slots. You’re limited to standard-height memory, so modules with elongated cooling fins are out. We like the Corsair power supply, though. Its modular, flat power cables are neatly routed around the case without obstructing anything.

The MSI P55-GD65 motherboard has a second PCI-E x1 slot, but this is blocked by the double-height Nvidia GeForce GTX 275 graphics card. There’s an accessible PCI-E x4 slot, though, as well as two PCI slots and an additional PCI-E x16 slot. You can use the latter for any PCI-E expansion card, or add a second Nvidia 275. The motherboard supports ATI CrossFire as well as Nvidia’s SLI.

Scan usually sells PCs without a monitor, keyboard and mouse, but for this review it bundled an Iiyama ProLite E2208HDS 22in widescreen display, which is bright and sharp. You also get an excellent Logitech G5 gaming mouse and a G15 keyboard. The keyboard is superb for typing and gaming, and there are extra programmable function keys for gaming.

The 3XS P55 OC is insanely fast – quicker than some Core i7-equipped PCs. Scan provides a full one-year warranty, so you don’t have to risk damaging expensive hardware by attempting to overclock a PC yourself. At £1,142, the P55 OC is a good choice if you want the very best performance, but you’re paying for the privilege.

Basic Specifications

Rating *****
Processor Intel Core i5-750
Processor external bus 193MHz (3.4GHz QuickPath Interconnect)
Processor multiplier x19
Processor clock speed 3.67GHz
Processor socket LGA1156
Level 1 cache 4x 64KB
Level 2 cache 4x 256KB
Memory 4.000000
Memory type PC3-12800
Maximum memory 16GB
Motherboard MSI P55-GD65
Motherboard chipset Intel P55
Power consumption standby 4W
Power consumption idle 83W
Power consumption active 235W


USB2 ports (front/rear) 2/7
Firewire ports (front/rear) 0/1
eSATA ports (front/rear) 0/1
Wired network ports 2x 10/100/1000
Wireless networking support none
Other ports none

Internal Expansion

Case midi tower
PCI-E x1 slots (free) 2 (0)
PCI-E x16 slots (free) 2 (1)
Free Serial ATA ports 2
Free memory slots 2
Free 3.5in drive bays 5

Hard Disk

Hard disk model(s) Samsung HD103UJ
Interface SATA 300
Total storage capacity 1,000GB
Spindle speed 7,200rpm


Graphics card(s) 896MB Nvidia Geforce GTX 275
Graphics/video ports 2x DVI, TV out


Sound Realtec ALC889
Sound outputs 7.1 line out, coaxial S/PDIF out, optical S/PDIF out
Speakers none

Removable Drives

3.5in floppy drive no
Supported memory cards SD, SDHC, MMC, Memory Stick Pro/Duo, CF, CF II, MicroDrive, M2, MicroSD, SIM
Optical drive model HL-DT-ST GH22NS50
Optical drive type(s) DVD+/-RW +/-DL


Viewable size 22 in
Screen model Iiyama ProLite E2208HDS
Native resolution 1,920×1,080
Response time 2ms
Screen inputs DVI, VGA

Other Hardware

Modem No
Keyboard Logitech G15
Mouse Logitech G5 Laser Mouse


Software included CyberLink PowerDVD 9
Operating system Windows 7 Home Premium 64-bit
Operating system restore option Windows disc

Buying Information

Warranty one year RTB
Price £1,142

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