• Editors' rating
    7.3 Very good


  • Massive 16.1in. UXGA screen
  • very good performance with content-creation-type applications and 3D games.


  • No wireless networking as standard
  • moderate battery life.

Intel's new Mobile Pentium 4 Processor-M (MP4-M) recently made its debut, to distinctly muted applause. Echoing the experience with the desktop Pentium 4, we found the MP4-M's performance with mainstream productivity applications to be no better -- even slightly worse -- than that of its MPIII-M predecessor, despite the former's 1.7GHz clock speed. Performance with demanding content-creation applications was better, but the advantage did not seem compelling. However, we've only seen one mobile Pentium 4 notebook so far (Dell's Inspiron 8200), and so we were keen to get our hands on Sony's brand-new top-of-the-range notebook, the VAIO PCG-GRX316SP, in order to verify our initial impressions.

Like the Inspiron 8200, Sony's GRX316SP uses a 1.7GHz MP4-M processor, supported by the equally new 845MP chipset. However, it has double the memory -- a generous 512MB of PC1600 DDR SDRAM (the maximum possible) -- which should help speed things along when running demanding applications like video editing software. The hard disk is a 40GB Toshiba unit, while the optical drive in the single modular bay is a Sony DVD/CD-RW combo drive with 8X DVD read, 24X CD-ROM read, 16X CD-R write and 10X CD-RW rewrite speed. Unlike on most 'desktop replacement' systems, there's no second drive bay, and therefore no option to have a built-in floppy drive, but you do get a MagicGate Memory Stick slot.

However, the GRX316SP's standout feature, apart from the mobile Pentium 4 CPU, is undoubtedly its 16.1in. TFT display -- a first on any notebook. This massive screen, which has a native resolution of 1,600 by 1,200 pixels (UXGA), dominates the whole design, from the large 35.5cm by 29.2cm footprint to the way the 87-key keyboard almost seems lost when you open up the lid. The overall look and feel is typical Sony VAIO, albeit with a darker livery than hitherto, but there are some nice touches: we particularly liked the magnetized flip-down covers for the I/O ports. The display is driven by ATI's Mobility Radeon 7500 graphics chipset, with 32MB of DDR SDRAM -- not quite a match for the leading-edge GeForce4 440 Go in Dell's Inspiron 8200 but, as we shall see, still a very capable 2D/3D accelerator.

The GRX316SP is largely legacy-free as far as ports are concerned, lacking serial, PS/2 and infrared ports. What you do get are parallel and VGA ports, three USB ports (one on each side and one at the back), an i.LINK (IEEE 1394) port and a video-out port. Ethernet and (software) modem connectivity is integrated, but 802.11b wireless networking is not provided as standard -- for that, you'll have to pay extra and use up one of the system's two PC Card slots.

Performance-wise, the GRX316SP largely confirms our initial impressions of the MP4-M from the Dell Inspiron 8200. When running mainstream productivity applications, the GRX316SP is disappointing, lagging behind both the Inspiron 8200 and our reference 1.13GHz MPIII-M-based Inspiron 8100, with a Business Winstone 2001 score of 34.6 -- and that's with 512MB of RAM rather than 256MB. The GRX316SP does better when running more demanding applications, returning a Content Creation Winstone 2002 score of 25.3. However, that's still behind the desktop Pentium 4-based Hi-Grade Ultinote M6400's front-running score of 26.8. Graphics performance is excellent, courtesy of the ATI Mobility Radeon 7500, although it cannot match the peerless GeForce4 440 Go in Dell's Inspiron 8200. Battery life of two hours and 13 minutes isn't great, but this 3.76kg system is no-one's idea of an ultraportable, and is most likely to be used when plugged into the mains. The modular bay will accept a second battery if necessary.

If you need copious screen space for editing video, the VAIO PCG-GRX316SP's eye-catching 16.1in. display provides it in spades, and the ATI Mobility Radeon chipset has the pixel-pushing power to drive it. However, with its hefty price of £2,299 (ex. VAT), the GRX316SP is clearly an expensive general office workhorse, especially as you can get better performance with mainstream applications from cheaper mobile Pentium III-M-based systems.


Packaged Quantity 1
Recommended Use corporate business, small business
Built-in Devices Jog Dial, display, keyboard, stereo speakers, touchpad
Processor / Chipset
CPU Intel Pentium 4-M 1.7 GHz
Cache L2 - 512 KB - Advanced Transfer Cache
Data Bus Speed 400 MHz
Chipset Type Intel 845MP
Cache Memory
Type L2 cache
Installed Size 512 KB
Upgrade Rule max 256 MB module
Technology DDR SDRAM
Installed Size 512 MB
Optical Drive 1 x CD-RW / DVD-ROM combo removable
Type none
Read Speed 24x (CD) / 8x (DVD)
Write Speed 16x
Rewrite Speed 10x
Type portable
Max Supported Size 512 MB
Technology DDR SDRAM
Form Factor SO-DIMM 200-pin
Slots Qty 2
Empty Slots 1
Widescreen Display No
Diagonal Size (metric) 40.9 cm
Display Resolution Abbreviation UXGA
Hard Drive
Type HDD
Installed Qty 1
Capacity 40 GB
Audio & Video
Graphics Processor AGP 4x - ATI Mobility Radeon 7500
Analog Video Format NTSC, PAL
Type Jog Dial, keyboard, touchpad
Wired Protocol 10/100 Ethernet
Optical Storage
Drive Type CD-RW / DVD
Type CD-RW / DVD-ROM combo
Form Factor removable
Installed Qty 1
CPU Type Pentium 4-M
Manufacturer Intel
Clock Speed 1.7 GHz
Floppy Drive
Type none
Card Reader
Type card reader
Supported Flash Memory Memory Stick
Technology lithium ion
Run Time (Up To) 3 hour(s)
Connections & Expansion
Expansion Bays 1 x front accessible - (0 free)
Slots 1 x CardBus (1 free)
2 x memory (1 free)
Interfaces 1 x display / video - VGA - 15 pin HD D-Sub (HD-15)
1 x headphones - output - mini-phone stereo 3.5 mm
1 x modem - phone line - RJ-11
1 x microphone - input - mini-phone mono 3.5 mm
1 x parallel - IEEE 1284 (EPP/ECP) - 25 pin D-Sub (DB-25)
1 x docking / port replicator
3 x USB 4 pin USB Type A
1 x IEEE 1394 (FireWire)
1 x network - Ethernet 10Base-T/100Base-TX - RJ-45
1 x display / video
Memory Card Reader Yes (Memory Stick)
Brand Sony
Product Line Sony VAIO
Model PCG-GRX316SP
Packaged Quantity 1
Compatibility PC
Max Transfer Rate 56 Kbps
Data Link Protocol Ethernet, Fast Ethernet
Form Factor integrated
Integrated Options Stereo speakers, keyboard, touchpad, display, Jog Dial
Included Laptop Accessories weight saver module
Diagonal Size 16.1 in
Notebook Type notebook
Platform Windows
Hard Drive Capacity 40 GB
Dimensions & Weight
Width 14 in
Depth 11.5 in
Height 1.6 in
Graphics Controller
Form Factor integrated
Interface Type AGP 4x
Audio Output
Form Factor integrated
Signal Processor Intel 845MP
Sound Output Mode stereo
Max Sampling Rate 48 KHz
Compliant Standards AC '97, Microsoft WSS 1.0/2.0
Manufacturer Warranty
Type 1 year warranty
Data Bus Speed 400 MHz
Chipset Type Intel 845MP
Physical Characteristics
Form Factor portable
Weight 8.38 lbs
Type power adapter
Operating System / Software
OS Provided: Type Microsoft Windows XP Professional
Type Adobe Acrobat Reader 5.0, Adobe Photoshop Elements, Adobe Premiere LE, Apple QuickTime 5, ArcSoft Panorama Maker, Drivers & Utilities, Microsoft Internet Explorer 6.0, Norton AntiVirus, RealJukebox, RealPlayer, Sony DVgate, Sony Digital Printing, Sony MovieShaker, Sony PictureGear, Sony PictureToy, Sony Smart Capture, Sony SonicStage, Sony VisualFlow, WinDVD
Video Output
Graphics Processor ATI Mobility Radeon 7500
Graphics Processor Series ATI Mobility Radeon
Video Memory
Technology DDR SDRAM
Installed Size 32 MB
Expansion Bays
Total Qty 1
Service & Support
Type 1 year warranty
Service & Support Details
Type limited warranty
Service Included parts and labor
Full Contract Period 1 year