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Gigabyte P35X v6 review (GTX 1070, 4K, Core i7)

Gigabyte P35X v6 review (GTX 1070, 4K, Core i7)

20160809103656_srcThe latest gaming laptop from Gigabyte uses one of Nvidia’s stellar new Pascal GPUs to deliver top-tier gaming performance, but that’s not the only area where the P35X v6 impresses.

This machine packs a 4K screen and Core i7 processor into a 21mm-thick frame, and it only costs £2,100 – a decent price considering the amount of hardware inside.


The Pascal architecture is the first time that a mobile range of GPUs has been able to match desktop equivalents. Nvidia has achieved this by making huge gains in efficiency, and has made minor tweaks to develop the mobile GTX 1070.

gigabyte07The mobile card has 2,084 stream processors and a core clock of 1,442MHz, while the desktop GPU has just 1,920 stream processors but a 1,506MHz speed. Both versions of the GPU have 8GB of 8,000MHz GDDR5 memory.


Gigabyte has paired the GTX 1070 with the Core i7-6700HQ, which is one of Intel’s best mobile processors: four Hyper-Threaded cores and a 2.6GHz core clock see to that. There’s 16GB of memory, a 256GB Samsung SSD and a 1TB HDD.

The specification is virtually identical to the Gigabyte’s biggest rival, the XMG P507 – that machine has the same GPU, CPU and storage. Both machines have 16GB of memory, but the XMG’s runs a little quicker, at 2,400MHz.

Connectivity is conventional, too. The Gigabyte has Gigabit Ethernet, dual-band 802.11ac wireless and Bluetooth 4.0, although there’s no sign of Killer Ethernet or any other game-friendly features.

There’s one major component where the Gigabyte takes a big leap ahead of its rival: the screen. The P35X v6 includes a 15.6in 4K panel, while the XMG made do with a 1080p screen. The Gigabyte doesn’t have Nvidia G-Sync like the XMG, but the huge increase in detail is a good trade-off.

gigabyte21Full Specification

CPU: 2.6GHz Intel Core i7-6700HQ
Memory: 16GB 2,133MHz DDR4
Graphics: Nvidia GeForce GTX 1070 8GB
Sound: On-board
Screen size: 15.6in 3,840 x 2,160 IPS
Hard disk: 256GB Samsung SM951 NVMe M.2 SSD, 1TB hard disk
Weight: 2.4kg
Ports: 3 x USB 3, 1 x USB 3.1 Type-C, Gigabit Ethernet, 2 x audio, SD card slot, HDMI, Mini-DisplayPort
Dimensions: (W x D x H): 385 x 270 x 21mm
Extras: Windows 10 Pro 64-bit, dual-band 802.11ac WiFi
Warranty: 2 yr RTB


Most of this machine’s budget has been spent on the components, which means the exterior is plain. The P35X v6 is made from aluminium and isn’t exactly a looker: the lid has a modest logo and a random orange strip, while the interior has stickers, a round power button – but not much else.

The seams between aluminium panels are a bit ugly, and we’re not keen on the wide screen bezel.

Build quality is equally uninspiring. The wrist-rest flexes and the rear of the screen is pliable. It doesn’t disturb the desktop, but we’d definitely use a protective sleeve.

The P35X v6’s underwhelming looks and build quality are similar to the XMG, which was just as staid. However, the Gigabyte does beat its rival in one area: size. The P35X v6’s modest 2.4kg weight undercuts the near-3kg XMG, and its 21mm thickness is around a centimetre slimmer than the XMG.

Gigabyte has littered the P35X v6 with a reasonable selection of ports. There’s a mini-DisplayPort output, USB 3 and 3.1 ports, an SD card slot and a Blu-ray reader. The XMG does go one step further, though, with two DisplayPort connectors and a SIM card slot.


The Gigabyte is a slim gaming laptop, which means it’s got a chiclet keyboard. They’re not often good for gaming, and that’s certainly the case here.

The P35X v6’s keyboard has a good layout, with large keys and a proper numberpad, but the buttons themselves don’t have much travel. They’re a little wobbly, which means they don’t have a hugely consistent feel – and the base beneath is too soft for our tastes.

The Gigabyte’s typing surface is reasonable for browsing the web and hammering out documents, but it’s not great for gaming – miles away from the best traditional laptop keyboards, and further behind proper mechanical units.

It’s not quite as good as the XMG, either. That machine also had a chiclet keyboard, but its keys offered more travel and a firmer, more consistent action.

The trackpad isn’t great, either. The surface is fine, but the two in-built buttons don’t move much, which leaves us second-guessing our clicks. The XMG was similarly poor. We’d always use a USB mouse.


The Gigabyte’s GTX 1070 is an enormously powerful mobile GPU, so it’s no surprise that is scythed its way through 1080p and 1440p gaming tests.

Its poorest average at 1080p was a fantastic 84fps in Fallout 4, and when we upped the resolution to 2,560 x 1,440 the GTX 1070 still managed at least 58fps in our three test titles.

The Gigabyte’s native resolution of 3,840 x 2,160 is a bigger test, but the GTX 1070 continued to perform well. Its Fallout 4 average of 26fps was bolstered by a maximum of 37fps, and it delivered an excellent average of 35fps in Witcher 3. It then managed 29fps in Crysis 3. Those results indicate that most games will be playable at 4K, either at high settings or with a couple of tweaks – and it also means there’s enough power here for VR.

There’s also little to choose between the Gigabyte and the XMG, which averaged 27fps, 39fps and 30fps in Fallout, Witcher and Crysis – although those tests were run with an external monitor rather than on the laptop’s panel itself.

gigabyte19The small gap between the Gigabyte and the XMG was highlighted in 3D Mark Fire Strike, where the P35X v6’s result of 12,379 points was about five hundred points behind the P507. It’s not a huge gap, and it’s not a deal-breaker – the Gigabyte is still an extremely quick notebook.

The Gigabyte’s close competition with the XMG continued in other benchmarks. The P35X v6’s Geekbench scores of 3,803 and 13,197 points outpace the P507 by a slim margin, but the Gigabyte fell behind in PC Mark 8.

Gigabyte’s machine also fell a little behind in storage and memory bandwidth tests, but the gaps between the two systems were never vast – and the P35X v6 remains a top-tier laptop that won’t struggle with top-end games and demanding work software.

Gigabyte has fitted this machine with a 76Wh battery, which is larger than the 60Wh unit in the XMG. That delivers a slight improvement in performance, with the Gigabyte lasting for more than one hundred minutes in a gaming test – about ten minutes more than the XMG. It’s better, sure, but it’s not a game-changer, so you’ll still want to be near a socket for longer sessions.

There weren’t any surprises in thermal benchmarks, either. The Gigabyte’s peak CPU temperature of 98°C is worryingly high, and the GPU peaked at 90°c – another toasty figure. They’re both a degree or two higher than the XMG.

Both laptops suffered from noise and heat transfer issues. The Gigabyte’s base panel became uncomfortably hot, while the fans rose to a high-pitched whirr that made us reach for headphones. When it comes to heat dissipation, at least, that’s still a little better than the XMG, which saw several areas of the machine become too hot.



Screen and Sound

The 4K screen gives the Gigabyte a huge advantage over the XMG. Its 282ppi density level tramples the P507’s 141ppi figure, which means games, pictures and websites are all far sharper and more detailed. For an easier comparison, consider that the Gigabyte has a screen density that isn’t far off the best smartphones – while the P507 looks far more ordinary.

gigabyte24The huge density means you’ll have to use the Windows 10 scaling settings to make icons and text legible, but we didn’t have any issues with that during our tests.
The Gigabyte didn’t just beat the XMG with more pixels – it’s better in most benchmarks. Its contrast ratio of 1,286:1 is higher and its black level of 0.22cd/m2 is deeper, which means colours will be more vivid and black shades will be better-rendered.

The Gigabyte’s average Delta E level of 1.52 is superior, which means more accurate colours, and this machine can render 92.4% of the sRGB colour gamut – more than the 85.3% of the P507. The Gigabyte’s colour temperature of 7,414K is a little cooler than the XMG, but it’s not noticeable.
Gigabyte’s panel on has one problem: uniformity. The screen gains about 10% brightness along its top edge but loses about 13% of its backlight strength along the bottom row. That’s a swing of 26% which is too much – and more than twice as bad as the XMG, which swung by around 10%.

It’s noticeable on static, bright screens, and so could prove problematic in some scenarios, like photo editing. It won’t be as obvious during fast-paced gaming sessions, but it’s certainly worth mentioning.

That uniformity result isn’t good, but the Gigabyte improves on its rival in every other department, from resolution to colour accuracy and contrast. That’s why we prefer the P35X’s screen for gaming.

We can’t say the same about the speakers. The two 1.5W units inside this laptop are weedy: the top-end is dominant but too indistinct and muddy, and that means the mid-range is buried and sometimes difficult to hear. There’s no subwoofer, either, so bass is almost absent. We’d definitely invest in a headset.

Packaging, Bundle and Alternative Specs

There are no surprises in the box, sadly: the plug, the documents and the driver disk, but that’s it.

Gigabyte don’t offer the dozens of configurable components like XMG does, either. If this model of P35X v6 doesn’t suit, there’s only one alternative. The P35X v6-CF2 costs £2,000 and drops down to 8GB of memory and a 1080p screen, although the core GPU and CPU remain untouched.


The Gigabyte is an awkward laptop. In many areas it’s superb: its games performance is top-tier, the rest of its specification is powerful, and the screen is impressive in both resolution and benchmarks.
In other areas, though, it’s more disappointing. The design and build quality is underwhelming, the keyboard and trackpad are mediocre, and the speakers are tinny.

Despite that, though, it’s still worth considering – few other laptops offer such power alongside a 4K screen at this sort of price. Perhaps, though, budget for some peripherals too.


Fantastic gaming speed, solid performance elsewhere and a great 4K screen – but inconsistencies in other departments prevent this notebook from cleaning up the competition.

Performance Award

Review Date
Reviewed Item
Gigabyte P35X v6 laptop

About Author

Mike Jennings

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