Answers (N/A if not applicable)
Provide a detailed description of the issue AND 'does it fail every single time, or only sometimes?' If you can offer a % rate please do.
Performance (frames per second) in games is poor when the computer is only running in single channel memory mode (1 DIMM). If the computer is running single channel memory mode the FPS always hover to mid 40's even if you turn down all the graphical settings and even resolution
Brand and Model of the system.
Tried with Asus G751JM and Lenovo Thinkpad Yoga 14
Hybrid or switchable graphics system? ie Does it have AMD or NV graphics too?
It does have Hybrid Graphics and I tested it with Asus G751JM with GTX 860m and Lenovo Thinkpad Yoga 14 which has GT 840m
Make and model of any Displays that are used to see the issue (see note2 below).
LFP = Local Flat Panel (Laptop panel)
EFP = External Flat Panel (Monitor you plug in)
LFP both are 1920x1080
How much memory [RAM] in the system (see note2 below).
The problem only occurs when the computer is running in single channel memory mode (RAM). As for the capacity I am using 8GB single DIMM sticks
Provide any other hardware needed to replicate the issue.
ie: Cables&brand, cable type [vga, hdmi, DP, etc], dock, dongles/adapters, etc
Hardware Stepping (see note1 below).
Operating System version (see note2 below).
VBIOS (video BIOS) version. This can be found in “information page” of CUI (right click on Desktop and select “Graphics Properties”.
Graphics Driver version; for both integrated Intel and 3rd party vendors (see note2 below).
both are using the latest (188.8.131.52.4279 for intel) and 355.98 for NVIDIA
SW/Apps version used to replicate the issue.
Single display, clone, or extended (see note2 below).
Display resolution & refresh rate setting of each display (see note2 below).
AC or DC mode, i.e. is power cable plugged in or not?
the computer is plugged in on the charger
How to repro
Please provide steps to replicate the issue. These steps are very crucial to finding the root cause and fix.
A screenshot to illustrate the issue is a huge plus. A video of the failure is even better! Attach to the post or provide the YouTube link.
1. Pick any laptop that has Hybrid Graphics (minimum atleast GTX 850m) and atleast two RAM slot
2. make the laptop run only in single channel memory mode by having it only 1 RAM stick installed
3. try game such as Dirt Rally, Dota 2, Grid Autosport
4. lower the graphical setting to the lowest and monitor the FPS through a program called fraps or through MSI afterburner with framerate enabled and shiw in On-screen Display.
5. FPS (frames per second) only averages mid 40's instead of 60 or higher especially considering we already lowered the graphical setting.
I checked both models and both uses NVIDIA Graphics only, this does not come switchable graphics, this means the graphics on the processor are disabled
That is not true. Both the Lenovo Thinkpad Yoga 14 and Asus G751JM has NVIDIA Optimus (Intel Graphics Enabled).
The same information I am reading from the link you added
"There is only one configuration available as of this writing and this includes a Core i5-4210U CPU, 1080p IPS display, GeForce GT 840M GPU" please click the Ge Force GT 840M link.NVIDIA GeForce 840M - NotebookCheck.net Tech This means the OEM disabled the Intel® graphics.
This information is from the link you added, please click on specifications
Asus - 17.3" Laptop - Intel Core i7 - 8GB Memory - 1TB Hard Drive - Black
Graphics Type: Discrete
Graphics Processing Unit/GPU: NVIDIA
1 of 1 people found this helpful
I'd have to agree with Ricardo on this one. Article and you note above "with dedicated GeForce graphics" which means Intel graphics is out of the picture at the least on the Yoga. Since it's failing on both I'd lean toward a 3rd party issue.
inside the nvidia control panel have you set the game to use the nvidia GPU
multi port memory does work with nvidia gpu (e.g CPU and nvidia GPU can both use DMA at the same time however Intel GPU shares the CPU data bus causing problems )
older Intel GPU had option to set priority when CPU and GPU wanted to read memory
I don't think you understand what this thread is for.
Read the original post and it answers the stuff you mentioned