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Better FPS on HDMI output than the laptop screen

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hipwell

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Discussion starter · #1 ·
Hey guys.

I recently bought an MSI gf65 with an rtx 3060 mobile gpu, and I've been mega impressed with it.

Until, I plugged it into my TV and noticed that at the same resolution I'm getting about 10fps more on the big screen than on the laptop screen?

Any idea why?
 
#4 ·
i think what Mario145 is saying is that when playing off a laptop (no external screen connected) theoretically your laptop is using resources to power up the internal display. However, I don't think that would impact performance. Your GPU / CPU is still sharing / sending / rendering the same bandwidth and information.

I used to use gaming laptops and there was no difference between performance on external or internal display.

Sometimes when I connect to a different display, ingame settings are reset. So just double check everything is the same. You shouldn't gain FPS with an external display at the same resolution.
 
#5 ·
There should not be a difference. In display settings, select “show on screen 2 only” instead of duplicate or extend desktop.

Also, does your laptop have a Ryzen 5000 series? I have a 5800H with a 3060 laptop GPU and found that the 3060 sometimes uses the Vega8 integrated graphics for display output and this hurts performance by about 10%. I only noticed this using bioses that I flashed from Techpowerup and was able to fix it by running DDU and reinstalling the Nvidia drivers.

By the way, can you download GPU-Z and upload your bios to the database? I want to try your bios on my card. If you’re interested, I found a bios that increases framerate by 5-10%.
 
Discussion starter · #6 ·
Thanks guys.

I'll run a proper benchmark and take it from there.

I read something on Reddit, that said that when using the laptop display, the Nvidia GPU has to pass the frame on to the Intel integrated GPU and then it outputs causing a drop in performance, whereas on an external screen on the HDMI output, it goes directly from the Nvidia GPU hence the frame increase.

That's probably a load of rubbish though which is why I thought id ask on here
 
#8 ·
hipwell said:
Yeh, I'll send you my bios, if it's not dodgy lol?
Click to expand...
Just hit the button on Techpowerup GPU-Z to upload to database and write a comment with the laptop model. I’ve run very dodgy bioses.

3DMark gives me a warning message before I start a benchmark run if the Nvidia GPU is using the integrated graphics for display output. Check if you are getting that message.
 
#9 ·
If your laptop has NVIDIA optimus, your screen is fed by the iGPU and the dGPU has to send data through your CPU to the screen which incurs a performance penalty. There is usually a mux switch (you can set in bios) that dictates how your screen is connected (to dGPU - no optimus or to the iGPU - optimus). For best gaming performance its recommended to use your dGPU. For best battery, keep optimus engaged. Your dGPU is directly connected to the exterior screen through the HDMI and Display Port so optimus doesn't affect performance when using these outputs.
 
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#10 ·
It seems likely that the GPU is the culprit, as described. Some laptop displays have a limited max frame rate by default, but that seems less likely in a laptop with such a gaming dGPU. Of course, HDMI can be rate limiting, unless the most recent version, with compatible cables. Displayport is usually faster, but few TVs can accept Displayport input.
 
Discussion starter · #11 ·
StAndrew said:
If your laptop has NVIDIA optimus, your screen is fed by the iGPU and the dGPU has to send data through your CPU to the screen which incurs a performance penalty. There is usually a mux switch (you can set in bios) that dictates how your screen is connected (to dGPU - no optimus or to the iGPU - optimus). For best gaming performance its recommended to use your dGPU. For best battery, keep optimus engaged. Your dGPU is directly connected to the exterior screen through the HDMI and Display Port so optimus doesn't affect performance when using these outputs.
Click to expand...
Wow that sounds like just what I was reading on the Reddit group!

I'll see if I can change this setting in the bios! I couldn't care less about the battery life, I'm always plugged in anyway
 
#12 ·
#14 ·
Its optimus, the internal screen is connected to the IGPU and the IGPU is connected to the DGPU which will have some overhead mostly visible in esport titles.

This is why most people will check for a MUX switch in laptop before buying as those will help you switch Optimus off and get only the DGPU connected to the monitor when you want to have max performance.

You will notice that Nvidia control panel will give you extra settings when connected to the external monitor as it won't pass through the IGPU
 
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#16 ·
hipwell said:
Hey guys.

I recently bought an MSI gf65 with an rtx 3060 mobile gpu, and I've been mega impressed with it.

Until, I plugged it into my TV and noticed that at the same resolution I'm getting about 10fps more on the big screen than on the laptop screen?

Any idea why?
Click to expand...
Yes. The video outputs usually directly connect to the laptop GPU, unlike the internal display where optimus is usually used and will cause performance hits. This is known.
 
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#17 · (Edited)
hipwell said:
Why would Nvidia want to do this? What's its purpose other than to hinder performance?

How do I find out if my laptop has got Optimus?

It's an MSI gf65 with i7 1070h and an rtx3060
Click to expand...
battery life.

Laptops with Optimus switch between IGPU and DGPU for power saving and laptops with no Optimus use only the DGPU which kills the battery faster.

Your options are either return the laptop and give me your budget and I will try to help you get a better deal or ignore the FPS difference its not that high in non-esport titles or just use an external monitor.

It says you are in the UK so the best option is this laptop:
15.6 inch


if you want to save a 100 although I still recommend the one above you can go with one of these:

15.6 inch
www.box.co.uk

81Y6005VUK, Lenovo Legion 5 Intel Core i7 16GB RAM | Box.co.uk

www.box.co.uk

17.3 inch


The have a mux switch which allows you to turn off Optimus and you can easily flash a 120watts Vbios on these 2060s which will make it faster than the 75watts 3060 in the GF+ better screen, better keyboard,better build and better cooling and if you pick the first one you will get G-sync + better everything again compared two the other two options that is already better than the GF.

+ you can unlock undervolting on the lenovo laptops, so 30 mins of your time flashing the Vbios,undervolting the CPU and setting a curve for your GPU will net you a better performance with cooler temps.
 
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#18 ·
There is the Tongfang laptops like the MECH‑15‑G3, they have mux switches too. Note that with Optimus off you lose VRR as well. :(

Nvidia is also working on Advanced Optimus which supposedly doesn't have this issue and sounds very interesting, but no laptops actually have it yet. Maybe next year.
 
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#19 ·
Asmodian said:
There is the Tongfang laptops like the MECH‑15‑G3, they have mux switches too. Note that with Optimus off you lose VRR as well. :(

Nvidia is also working on Advanced Optimus which supposedly doesn't have this issue and sounds very interesting, but no laptops actually have it yet. Maybe next year.
Click to expand...
You only lose VRR on some AMD laptops, but in the Intel side most laptops don't have VRR due to Optimus not the opposite
 
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#20 ·
Asmodian said:
There is the Tongfang laptops like the MECH‑15‑G3, they have mux switches too. Note that with Optimus off you lose VRR as well. :(

Nvidia is also working on Advanced Optimus which supposedly doesn't have this issue and sounds very interesting, but no laptops actually have it yet. Maybe next year.
Click to expand...
I thought it was launched. Most laptops use the mix switch because advanced optimus uses an NVIDIA proprietary chip that bridges the iGPU and dGPU and automatically selects which one goes to the screen. Its costly and a MUX is much cheaper.
 
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