If you’re looking for a panther lake laptop with dual screens, ASUS has 2 different models available, including the ASUS Zenbook DUO that starts at $2500, and the ROG Zephyrus Duo that costs a whopping $4500 or even $5500.
What exactly do you get for these insane prices? And what makes the ROG version twice as expensive as the Zenbook? Let’s find out.
Visual Appearance
Lets begin with visual appearance. Clearly, the Zenbook has a more conventional and professional looking laptop styling, making it suitable for any occasion. It looks quite clean throughout, including the kickstand that lets it sit upright.
The ROG, as expected, has a “gamer” focused design, with a Slash Lighting system on the lid. Otherwise, the top is fairly clean, but there are more angles on the keyboard, the bottom of the machine, and on the kickstand design.
Screens
Now let’s move on to the biggest reason to consider these laptops, the screen…s.
The Zenbook DUO comes with dual 14” OLED touchscreens with 2880 x 1800 resolution in a 16:10 aspect ratio, giving a pixel density of 243 PPI.
Refresh rate goes up to 144 Hz, and response time is rated at 0.2ms with standard and peak HDR brightness at 500 and 1000 nits, respectively.
The ROG Zephyrus offers 2 larger 16” OLED screens, but they have the same 3K resolution as the DUO, which means the PPI is lower at just 212. Furthermore, the refresh rate is only 120 Hz instead of 144. It’s odd that Asus would make the gaming-focused laptop have a lower refresh rate than the general use one.
Response time is the same at 0.2ms, though peak brightness is slightly higher at 1100 nits instead of 1000.
The ROG also has a MUX switch, which lets the machine bypass the integrated GPU and just use the discrete GPU instead, a feature not relevant to the Zenbook.
Processor and Graphics Performance
Speaking of GPU, that’s one the major differentiators between the Zenbook and ROG, and a large part of the reason why the latter costs so much more. But we can’t talk about GPU without also talking about the CPU.
The $2500 base model of the Zenbook DUO, and both the $4500 and $5500 versions of the ROG, come with the Intel Core Ultra 9 386H chip, which features integrated graphics with 4 Xe-cores.
The $2700 Zenbook comes with an upgraded Ultra X9 388H chip, which is slightly faster in max clock and memory speeds, but more importantly comes with the Arc B390 iGPU with 12 Xe-cores. There’s no discrete GPU option for the Zenbook DUO.
The ROG Zephyrus’ base $4500 model comes with an Nvidia 5070 Ti Laptop GPU with 12 GB of memory, while the $5500 model comes with a mobile 5090 with 24 GB of memory.
Performance wise, the 5070 Ti is of course a lot faster, about 2.6 times or 160% faster. Stepping up to the 5090 is only about 15% faster than the 5070 Ti, although you do get twice the video memory.
To manage performance, the Zenbook DUO can deliver up to 45 watts of Thermal Design Power with its cooling solution, while the ROG Zephyrus can deliver up to a whopping 150 watts of Total Graphics Power.
Wireless Keyboard and Trackpad
With 2 screens, the other unique feature of these laptops is the wireless keyboard that can be used while placed on top of the bottom screen to make it like a normal laptop, or separately so you can benefit from both screens at once.
The two models’ keyboards are similar in layout, though the 16” ROG’s keyboard unit is of course larger. The ROG keyboard has 4 extra keys on the top row, while the Zenbook keyboard has 2 extra keys between F12 and Delete.
The Zenbook keyboard also seems to have wider side-keys (like Shift, Tab, and Enter) than the ROG keyboard. Both keyboards feature 1.7mm key travel distance, though.
The ROG keyboard also boasts some other features, but the one that stands out most is the 20 million key press-lifetime, compared to claiming 1 million key presses for the Zenbook keyboard.
The ROG keyboard also has one-zone RGB lighting, while the Zenbook keyboard is simply backlit, and not adjustable in color.
For the trackpad, we can expect the ROG one to be larger since its a bigger machine, but exact dimensions are hard to say.
Memory and Storage
Both the Zenbook DUO and ROG Zephyrus have the same amount of memory, 32 GB, as well as the same amount of storage at 1 TB. However, the Zenbook’s 1 TB SSD is PCI-E 4.0 speed, while the ROG’s is the faster PCI-E 5.0 speed.
The Zenbook’s storage populates its single M.2 expansion slot, while the ROG has 2 expansion slots, so you can more easily expand storage without having to toss the 1 TB card it comes with.
Especially as the SSDs even have a quick access magnetic door for easy swapping. Note the ROG’s second SSD slot is limited to PCI-E Gen 4 speed though.
Speakers and Camera
The Zenbook DUO boasts a 6 speaker sound system with 2 front-firing speakers, while the ROG also has 6 speakers, in what appears to be a similar configuration. From this, it’s uncertain if the ROG’s speakers sound better.
For webcams, both ROG and Zenbook machines feature 1080p webcams.
Ports and External Displays
When it comes to ports, the Zenbook DUO has 2 Thunderbolt 4 ports, 1 USB 3.2 Gen 2 Type-A port, an HDMI 2.1 port, and a 3.5mm audio jack.
Despite having HDMI 2.1, the Zenbook can only support up to 2 4K displays @ only 60 Hz, or a single 8K display also at 60 Hz, so don’t expect it to power high refresh rate external monitors.
There are a few more ports on the ROG Zephyrus, which comes with 2 Thunderbolt 4 ports that support DisplayPort 2.1 and power delivery up to 100 watts, 2 USB 3.2 Gen 2 Type-A ports, an HDMI 2.1 Fixed Rate Link port, a 3.5mm audio jack, and an SD card reader.
Presumably the faster DisplayPort and HDMI support on the ROG, which probably comes from the discrete GPU, means it should support higher refresh rate external displays, but the only note I found regarding this is that with the 2 built-in displays, you can have 3, 4, or even more total displays.
Wireless Connectivity
When it comes to wireless connectivity, both the Zenbook and ROG support triple band Wi-Fi 7. However, the Zenbook only supports Bluetooth 5.4, while the ROG supports Bluetooth 6.0.
Battery
The battery situation is actually quite surprising. The smaller Zenbook DUO features dual 99 watt-hour batteries, with a claimed 18+ hour battery life.
On the other hand, the ROG Zephyrus only has what appears to be a single 90 watt-hour battery, so you can expect battery life to be far less. That kind of makes sense for a gaming laptop that probably needs to be plugged in to get full performance anyway.
Size and Weight
And you won’t be wanting to lug that ROG machine around very much.
While the 14” Zenbook DUO is 0.92 inches thick and weighs a respectable 3.64 lbs, the 16” ROG Zephyrus is only 7% thicker at 0.98 inches, but the weight is 71% heavier at 6.22 lbs.
Comparison Summary: $2500 vs $2700 Zenbook DUO
Alright, let’s summarize and compare to see which machine gives you the best value.
First up are the 2 Zenbook DUO models. If you go for the $2700 Zenbook DUO versus the $2500 one, the extra $200 gets you:
- The Core Ultra X9 Processor that has the 12 core B390 iGPU, which could be 3 times faster than the 4-core iGPU
And that’s it! You’re paying $200 for the chip upgrade, which I think is well worth it if you are planning to utilize the GPU for gaming, AI, or other needs.
Comparison Summary: $2500/$2700 Zenbook DUO vs $4500 ROG Zephyrus
Next, let’s compare the $2500 or $2700 Zenbook DUO versus the $4500 ROG Zephyrus. Paying an extra $1800 or $2000 gets you:
- A larger set of displays that is 30% larger in screen area, but with worse pixel density, only 120 Hz instead of 144 Hz refresh rate, and 100 nits more peak brightness.
- A mobile 5070 Ti GPU that is 2.6 times as fast as the 12-core iGPU, or perhaps 7.8 times as fast as the 4-core iGPU
- A potentially more durable keyboard with a couple extra keys, RGB backlighting, and a larger touchpad
- A faster SSD along with an extra M.2 expansion slot and easy SSD access
- Potentially support for more or higher resolution and refresh rate external monitors with DisplayPort 2.1 and HDMI 2.1 FRL, an extra USB-A port, and an SD card reader
- Bluetooth 6.0 vs 5.4
- A 9% smaller battery, and potentially only 1 of them instead of 2, which could mean 55% less battery capacity
- And a 7% thicker and 71% heavier machine
It’s clear here that the extra cost is going into 2 main things: the larger dual screens, and the 5070 Ti GPU. However, the screens on the ROG, besides being larger, aren’t necessarily better in all respects than the Zenbook, especially when it comes to refresh rate and PPI.
The 5070 Ti does offer much faster performance, especially compared to the $2500 Zenbook. But the $200 upgrade to the B390 iGPU closes the gap significantly, and for far less money.
Comparison Summary: $4500 vs $5500 ROG Zephyrus
Now let’s look at the $4500 and $5500 ROG Zephyrus models. If you pay an extra $1000, you get:
- An RTX 5090 that has twice as much video memory and is 15% faster in performance than the 5070 Ti
And that’s it. So you are literally paying $1000 more, not for an entire mobile 5090, but as the price difference just to upgrade from the 5070 Ti to the 5090. If the performance is really only 15% more, then this seems like a really bad deal.
Overall, I think the best value here belongs to the $2700 Zenbook DUO with the X9 chip and B390 GPU, which significantly closes the graphics performance gap between the Zenbook and ROG machines, but at only 10% of the price difference.
