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Samsung U28E590D Freesync range

post #1 of 2
Thread Starter 
I have been having a hard time trying to figure out the real Freesync range of this monitor, for like a month now. I'm on Windows 10 64bit, AMD 16.12.2 driver, with RX 480, and monitor driver installed. I also tested it under Windows 7 with old and new drivers, same results.

All of the reviews I have read before purchasing state that the range is 40-60 or at least 45-60.
AMD lists it having 40-60 range: AMD Official Freesync Monitors
A few others are reporting the same problem by the way.

What actually happens is, if I turn OFF Freesync in the monitor's OSD, I got the default maximum refresh rate of 60hz. With Freesync ON, maximum refresh rate becomes 64! And the FS range is actually 54-64! (Reported under Radeon Settings, and tested to be the case).

I tried many times to modify the range of Freesync using CRU, and everytime I do so and test it with games or AMD/Nvidia apps, the monitor will eventually turns white or green after a random amount of time (sometimes 10min, others up to 1 or 2 hours), What's interesting is that Freesync actually works in the range I specify (tried up to the 40-64 range).


Here's all the details that might be useful in diagnosis:

- Part of the manual that lists all of the panel specs (Keep in mind that FS is only working with Displayport):
U28E590D Manual


- Default timings and frequencies detected by CRU:





Is the Freesync range of this monitor really is 54-64?! Or am I doing something wrong?
Thanks in advance.
post #2 of 2
It seems to be between 55-64Hz.

http://www.overclock.net/t/1565637/anyone-else-have-the-samsung-u28e590d-freesync-4k-monitor
 
BitoHeaven
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BitoHeaven
(16 items)
 
Cigar ATX PC
(14 items)
 
CPUMotherboardGraphicsGraphics
Intel i7 4770k @ 4.5GHz Asus Maximus VI Gene Gigabyte R9 290 @ 1160MHz/1350MHz Gigabyte R9 290 @ 1160MHz/1350MHz 
RAMHard DriveHard DriveOptical Drive
G.Skill Trident X 2X8GB DDR3 2400MHz Samsung 840 PRO 256GB  Seagate Barracuda 7200.14 3TB SATA III 6Gb/s 64... Pioneer Blu-ray Burner 
CoolingOSMonitorKeyboard
Liquid Single Loop Triple Radiators Win 7 SP1 Professional x64bit  Samsung SynchMaster 24" Widescreen 1200p TFT-LC... Logitech G15 
PowerCaseMouseMouse Pad
EVGA SuperNOVA G2 1300w 80+ Gold Fully Modular  Fractal Design Arc Midi R2 Microsoft Sidewinder X5 Allsop Redmond Mouse Pad 
Audio
Cambridge Soundworks 5.1 
CPUMotherboardGraphicsRAM
Intel Core i5-3570K @ 4.6GHz ASRock Z77E-ITX mITX  Sapphire HD 7990 @ 1090MHz/1600MHz G.SKILL Ripjaws 2X4GB DDR3-1600 @ 1866MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial SSD 128GB mSATA SATA III 6GB  Seagate Barracuda 7200.12 1TB SATA II 32MB 7200RPM LG DVD R/W SATA with LightScribe Corsair Cooling Hydro Series H100 
OSMonitorKeyboardPower
Win 7 Professional x64bit Samsung 52" 1080p 60Hz LCD Logitech Wireless K330 Corsair AX850 Gold Fully Modular 
CaseMouseMouse PadAudio
BitFenix Prodigy Mini-ATX Black  Logitech Wireless M215 Corsair Vengeance MM200 Yamaha RX-V681 & PSB/Polk Audio 5.1 
CPUMotherboardGraphicsRAM
AMD Athlon II X4 640 ASRock N68C-GS NVIDIA 6600GT G. Skill Ripjaws DDR3 1600MHz 
Hard DriveOptical DriveCoolingOS
WD Caviar Blue 500GB 16MB Cache 7200RPM LG Optical Drive Thermaltake Max Orb Windows 7 
MonitorKeyboardPowerCase
Viewsonic 19” Flatscreen CRT Gigabyte GK-K6800 103  Thermaltake TR2 600W Cigar Boxes 
MouseMouse Pad
Zalman ZM-M300 Corsair Vengeance MM200 
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