To help us provide you with free impartial advice, we may earn a commission if you buy through links on our site. Learn more

PC Specialist Infinity K7 review

Our Rating :
Price when reviewed : £499
inc VAT

The Infinity K7's real-world performance fails to live up to its on-paper specification


3.4GHz AMD A10-7700K, 8GB RAM, 24in 1,920×1,080 display, Windows 8.1

The PC Specialist Infinity K7 isn’t much to look at, with its squat black-and-grey case, but it’s equipped with one of AMD’s latest integrated-graphics processors; the “Kaveri” A10-7700K. However, in this system, the processor produced one of the worst performances we’ve seen, with an overall score of just 63 in our benchmarks, compared to the 67 we’re used to seeing with the chip running at its stock speed.

PC Specialist Infinity K7

Graphics performance in our 3D gaming benchmarks was also rather disappointing. We don’t expect even the latest integrated graphics to handle Dirt Showdown smoothly at 1,920×1,080, 4x AA and Ultra quality, but the Infinity K7 also struggled at lower resolutions. At 1,280×720 and High quality, we only saw a not-quite-playable 27.2fps, while to get a playable frame rate of 31.3fps at our monitor’s full 1,920×1,080 resolution, we had to drop the game’s graphics quality to Low.

This was surprising, considering we’ve seen this processor produce over 50fps in this benchmark at 1,280×720. We’ve seen Kaveri graphics affected by RAM speed before, as well as running much better with dual-channel RAM than with a single module. For this reason we exchanged the PC’s single 8GB 1,333MHz module for two 4GB 1,600MHz modules in dual-channel mode, but this failed to improve our scores.

We suspect this is a problem with the Asus A55BM-E motherboard, and specifically its cut-price AMD A55 chipset. You’d need to add a discrete graphics card to give this PC acceptable gaming performance, but bear in mind that the 350W Corsair PSU will limit you to low- and mid-range cards.

PC Specialist Infinity K7

You’ll also have to remove the very useful Wi-Fi adaptor which occupies the motherboard’s only PCI-E x1 slot, as it’ll get in the way of most graphics cards’ coolers. There’s only one PCI slot in addition to the single PCI-E x1 and x16 slots, so if you’re looking to make significant future upgrades, you’re best off looking elsewhere. At least there are six SATA ports, of which only two are currently in use, but they’re only SATA2 models, not SATA3. This will cause a performance bottleneck if you want to add an SSD to the system. The ugly, roughly finished interior of the case has two 5 1/4in bays and two 3 1/2in bays; one holds the PC’s 1TB hard disk, and the other is an external bay. There’s also a mounting point for an upright 2 1/2in drive at the right-hand side of the case.

The PC’s hard disk is fitted to an upright bay behind the front panel, but even with this in place, there’s over 300mm of space available if you ever want to fit a really hefty graphics card – but as mentioned above, anything too powerful will be too much for the low-power PSU to handle. The case’s exterior is as ugly as its interior, but it’s at least small, easy to fit discreetly out of sight and easy to open, thanks to clips on each side panel. The front panel has, along with a DVD-RW drive, two USB ports and 3.5mm mic and headphone ports.

Pages: 1 2

Basic Specifications

Rating **
Processor AMD A10-7700K
Processor external bus 100MHz (HyperTransport)
Processor multiplier x34
Processor clock speed 3.4GHz
Processor socket FM2+
Memory 8
Memory type PC3-10666
Maximum memory 16GB
Motherboard Asus A55BM-E
Motherboard chipset AMD A55


USB2 ports (front/rear) 2/4
eSATA ports (front/rear) 0/0
Wired network ports 1x 10/100/1000
Wireless networking support 802.11n

Internal Expansion

Case midi tower
PCI-E x1 slots (free) 1 (0)
PCI-E x16 slots (free) 1 (1)
Free Serial ATA ports 4
Free memory slots 1
Free 3.5in drive bays 1

Hard Disk

Hard disk model(s) Seagate Barracuda (ST1000DM003-1CH162)
Interface SATA3


Graphics card(s) integrated AMD Radeon R7
Graphics/video ports DVI, VGA


Sound Realtek ALC887
Sound outputs 5.1 line out, headphone, microphone
Speakers none

Removable Drives

Supported memory cards none
Optical drive type(s) DVD+/-RW +/-DL


Viewable size 24 in
Screen model AOC E2470Swda
Native resolution 1,920×1,080
Screen inputs DVI, VGA

Other Hardware

Keyboard PC Specialist S300
Mouse Logitech B110


Operating system Windows 8.1
Operating system restore option Windows disc

Buying Information

Warranty one year RTB
Price £499

Read more