Specific power needs

boristhemoggy

Active member
I have specific needs in that I run my current laptop from an inverter which ramps the mains up from a 12 volt battery bank.
The laptop I use currently is rated at 1.5 amp at mains, and the charger supplies 19 volts at 4.74 amps. What that means is, there is a draw of approximately <6 amps from my batteries when using the laptop.

Now, I need a more powerful computer as this laptop is incredibly slow at running Lightroom and Adobe Photoshop. Most all in ones I see have a mains draw of 2-2.5 amps, which means they use far too much current for my batteries to cope with. If you refer to the usage above, I can't really exceed 7amps in total.

So, my question is, how powerful a computer can I get for those stated power needs?
I realise this might be a difficult one to answer but I've failed so far to find anything off the shelf. (iMac's draw 10 amps and I really don't want to move from Windows)

This might be my ideal setup as I'd love an all in one type machine:

Chassis & Display
Maestro: 21.5" Non-Touch Full HD Screen (1920x 1080)
Processor (CPU)
Intel® Core™i5 Quad Core Processor i5-3570 (3.4GHz) 6MB Cache
Memory (RAM)
16GB SAMSUNG 1333MHz SODIMM DDR3 MEMORY (2 x 8GB)
Graphics Card
NVIDIA® GeForce® GT 750M - 2.0GB DDR5 Video RAM - DirectX® 11
Memory - 1st Hard Disk
500GB WD CAVIAR BLACK WD5003AZEX, SATA 6 Gb/s, 64MB CACHE (7200rpm)
1st DVD/BLU-RAY Drive
8x SATA DVD±R/RW/Dual Layer (+ 24x CD-RW)
Memory Card Reader
Integrated 4 in 1 Card Reader (SDXC/MMC/MS/XD)
Sound Card
ONBOARD 8 CHANNEL (7.1) HIGH DEF AUDIO (AS STANDARD)
Network Facilities
GIGABIT LAN & WIRELESS INTEL® N135 802.11N (150Mbps) + BLUETOOTH
USB Options
4 x USB 3.0 PORTS + 2 x USB 2.0 PORTS AS STANDARD
Operating System
Genuine Windows 7 Home Premium 64 Bit w/SP1 - inc DVD & Licence (£79)
Office Software
NO OFFICE SOFTWARE
Anti-Virus
NO ANTI-VIRUS SOFTWARE
Speakers
2 x INTEGRATED 5W SPEAKERS HIGH QUALITY SPEAKERS
Webcam
INTEGRATED 720P 30 FPS HD WEBCAM
Warranty
3 Year Standard Warranty (1 Month Collect & Return, 1 Year Parts, 3 Year Labour)
Delivery
STANDARD INSURED DELIVERY TO UK MAINLAND (MON-FRI)
Build Time
Standard Build - Approximately 8 to 10 working days
Quantity
1
 

PCS

Administrator
Staff member
I have checked the amp and wattage draw on a similar Maestro model. The wattage draw when running the Windows Experience Index was 65W and the AMP draw was 0.53. The AC adapter supplied is rated 180W.
 

boristhemoggy

Active member
OK that sounds too low for what it's running tbh.
Is it possible to call in and see a similar machine running? If I can run a machine of that spec at only .53 watts then I'll buy one on the spot!
If I can see one running please let me have an address.
 

PCS

Administrator
Staff member
You are welcome to come to our premises to see a model running - our address is as follows:

Units 20 + 20A Brockholes Business Park, Rock Mill Road, Brockholes, Holmfirth, HD9 7BN

You can come anytime Monday to Friday between 9am and 5pm. Here are some images of the device I used to test the power draw.

WP_20130612_003.jpg

WP_20130612_004.jpg
 

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