Overclock.net › Forums › Components › Keyboards › Cherry ML switches.
New Posts  All Forums:Forum Nav:

Cherry ML switches. - Page 2

post #11 of 25
Thread Starter 
Quote:
Originally Posted by amder;13097887 
I got mine for $12.50. OP They are very cool keyboards, might take you awhile to get used to the layout as its a bit different.

Edit: I use mine for SC2 and BC2 nearly everyday, love it for gaming.
Pic of serial numbers?

The only ones I can find on ebay for that low a price are P/S2 with printed keys. I want the G84-4100LCMUS-2 with the USB connection and Laser etched keys.

Tracking says it will be here at 2pm. I just ordered it yesterday from a store that is 280 miles away(Renton, Washington)!
post #12 of 25
Quote:
Originally Posted by PDXMark;13098018 
Pic of serial numbers?

The only ones I can find on ebay for that low a price are P/S2 with printed keys. I want the G84-4100LCMUS-2 with the USB connection and Laser etched keys.

Tracking says it will be here at 2pm. I just ordered it yesterday from a store that is 280 miles away(Renton, Washington)!

Oh wasn't sure of the differences, as mine is the P/S2 version. I dont see why you would want USB when P/S2 is much better. But the laser etched keys would be very nice. smile.gif
R.I.P amder
(11 items)
 
G3258
(7 items)
 
 
CPUMotherboardGraphicsRAM
i5 6600k Gigabyte GA-Z170X-Gaming 3 EVGA GTX 1070  Kingston HyperX FURY 2x8GB 
Hard DriveHard DriveCoolingOS
Kingston UV400 480Gb Kingston V300 240GB Corsair H105 Windows 10 Home 64bit 
MonitorPowerCase
BenQ XL2420TE  Corsair HX650 Fractal Design Define S 
CPUMotherboardRAMHard Drive
G3258 MSI H81M-P33 4GB Corsair XMS3 1600 500GB WD HDD 
OSPowerCase
Windows 8.1 Cooler Master 500watt High Speed PC Tech Bench 
  hide details  
Reply
R.I.P amder
(11 items)
 
G3258
(7 items)
 
 
CPUMotherboardGraphicsRAM
i5 6600k Gigabyte GA-Z170X-Gaming 3 EVGA GTX 1070  Kingston HyperX FURY 2x8GB 
Hard DriveHard DriveCoolingOS
Kingston UV400 480Gb Kingston V300 240GB Corsair H105 Windows 10 Home 64bit 
MonitorPowerCase
BenQ XL2420TE  Corsair HX650 Fractal Design Define S 
CPUMotherboardRAMHard Drive
G3258 MSI H81M-P33 4GB Corsair XMS3 1600 500GB WD HDD 
OSPowerCase
Windows 8.1 Cooler Master 500watt High Speed PC Tech Bench 
  hide details  
Reply
post #13 of 25
Quote:
Originally Posted by PDXMark;13097870 
Any of you ever measure the device latency between a USB keyboard and a P/S2 keyboard?

Manyak did once. The latency is identical, to the limits of his measurement. PS/2 should theoretically be faster since there's less dicking around with the convoluted USB protocol; but there's some other bottleneck involved.
post #14 of 25
Quote:
Originally Posted by Phaedrus2129;13098099 
Manyak did once. The latency is identical, to the limits of his measurement. PS/2 should theoretically be faster since there's less dicking around with the convoluted USB protocol; but there's some other bottleneck involved.

Also with USB you can only get up to 6KRO, so only 6 keys can be pressed at once with USB. Only P/S2 supports full NKRO. Which allows you to press any amount of keys down. But Im not even sure this keyboard supports full NKRO. As mine only has 2KRO.
R.I.P amder
(11 items)
 
G3258
(7 items)
 
 
CPUMotherboardGraphicsRAM
i5 6600k Gigabyte GA-Z170X-Gaming 3 EVGA GTX 1070  Kingston HyperX FURY 2x8GB 
Hard DriveHard DriveCoolingOS
Kingston UV400 480Gb Kingston V300 240GB Corsair H105 Windows 10 Home 64bit 
MonitorPowerCase
BenQ XL2420TE  Corsair HX650 Fractal Design Define S 
CPUMotherboardRAMHard Drive
G3258 MSI H81M-P33 4GB Corsair XMS3 1600 500GB WD HDD 
OSPowerCase
Windows 8.1 Cooler Master 500watt High Speed PC Tech Bench 
  hide details  
Reply
R.I.P amder
(11 items)
 
G3258
(7 items)
 
 
CPUMotherboardGraphicsRAM
i5 6600k Gigabyte GA-Z170X-Gaming 3 EVGA GTX 1070  Kingston HyperX FURY 2x8GB 
Hard DriveHard DriveCoolingOS
Kingston UV400 480Gb Kingston V300 240GB Corsair H105 Windows 10 Home 64bit 
MonitorPowerCase
BenQ XL2420TE  Corsair HX650 Fractal Design Define S 
CPUMotherboardRAMHard Drive
G3258 MSI H81M-P33 4GB Corsair XMS3 1600 500GB WD HDD 
OSPowerCase
Windows 8.1 Cooler Master 500watt High Speed PC Tech Bench 
  hide details  
Reply
post #15 of 25
Thread Starter 
Quote:
Originally Posted by amder;13098077 
I dont see why you would want USB when P/S2 is much better.
Much better?

Polling frequencies on USB mice and keyboards are much higher than P/S2 Legacy connections. The highest polling freq available from P/S2 is about 200Hz, which makes no sense for gaming! My USB keyboard, pictured above, has a polling rate of 500Hz and I can even set my USB port to poll the USB keyboard at 1000Hz, simply by doing some tweaks in safe-mode. I've tried and tried to get P/S2 mice and keyboards to go over 200Hz Poll-rate, but it just wont happen. P/S2 is not capable of polling over 200Hz.

So with a low poll-rate on P/S2, how does it make it better than a USB connection? Please don't answer if its personal preference!
post #16 of 25
Its not a personal preference. Heres a good guide to read for mechanical keyboards. Also not once did I mention anything about polling rates. All I said is it was much better for key roll over.

http://www.overclock.net/keyboards/491752-mechanical-keyboard-guide.html
R.I.P amder
(11 items)
 
G3258
(7 items)
 
 
CPUMotherboardGraphicsRAM
i5 6600k Gigabyte GA-Z170X-Gaming 3 EVGA GTX 1070  Kingston HyperX FURY 2x8GB 
Hard DriveHard DriveCoolingOS
Kingston UV400 480Gb Kingston V300 240GB Corsair H105 Windows 10 Home 64bit 
MonitorPowerCase
BenQ XL2420TE  Corsair HX650 Fractal Design Define S 
CPUMotherboardRAMHard Drive
G3258 MSI H81M-P33 4GB Corsair XMS3 1600 500GB WD HDD 
OSPowerCase
Windows 8.1 Cooler Master 500watt High Speed PC Tech Bench 
  hide details  
Reply
R.I.P amder
(11 items)
 
G3258
(7 items)
 
 
CPUMotherboardGraphicsRAM
i5 6600k Gigabyte GA-Z170X-Gaming 3 EVGA GTX 1070  Kingston HyperX FURY 2x8GB 
Hard DriveHard DriveCoolingOS
Kingston UV400 480Gb Kingston V300 240GB Corsair H105 Windows 10 Home 64bit 
MonitorPowerCase
BenQ XL2420TE  Corsair HX650 Fractal Design Define S 
CPUMotherboardRAMHard Drive
G3258 MSI H81M-P33 4GB Corsair XMS3 1600 500GB WD HDD 
OSPowerCase
Windows 8.1 Cooler Master 500watt High Speed PC Tech Bench 
  hide details  
Reply
post #17 of 25
Quote:
Originally Posted by PDXMark;13098205 
Much better?

Polling frequencies on USB mice and keyboards are much higher than P/S2 Legacy connections. The highest polling freq available from P/S2 is about 200Hz, which makes no sense for gaming! My USB keyboard, pictured above, has a polling rate of 500Hz and I can even set my USB port to poll the USB keyboard at 1000Hz, simply by doing some tweaks in safe-mode. I've tried and tried to get P/S2 mice and keyboards to go over 200Hz Poll-rate, but it just wont happen. P/S2 is not capable of polling over 200Hz.

So with a low poll-rate on P/S2, how does it make it better than a USB connection? Please don't answer if its personal preference!

PS/2 is capable of offering NKRO, the ability of pressing every key simultaneously on the keyboard, as long as the keyboard supports it.

USB cannot do this. USB is limited to 6 keys and 4 modifiers. This does in fact limit you in gaming from time to time. There are a few keyboards that are USB and have exceeded this limit, however, they don't offer full NKRO.

This is why PS/2 is better for gaming

You should not be conserned about polling rate since it doesn't benefit you at all. Your monitor only refreshes about once every 16.3ms so the keyboard lag from the polling rate is not going to be noticiable by even the best players with PS/2 if the polling rate is 200hz


But I thought PS/2 was interrupt based, not polling based. Care to shed some light?
Toki
(10 items)
 
  
CPUGraphicsRAMHard Drive
[i7 860] [XFX 5870] [4x2gb] [WD 500gb] 
OSMonitorKeyboardPower
[W7] [HP LP3065 - CrossOver 27Q LED-P - Acer x243w] Ducky DK1087-CELLB Tenkeyless, MX Blue - Steels... [LC power 750W] 
Audio
[ATH-A700] + [Asus Xonar DG] 
  hide details  
Reply
Toki
(10 items)
 
  
CPUGraphicsRAMHard Drive
[i7 860] [XFX 5870] [4x2gb] [WD 500gb] 
OSMonitorKeyboardPower
[W7] [HP LP3065 - CrossOver 27Q LED-P - Acer x243w] Ducky DK1087-CELLB Tenkeyless, MX Blue - Steels... [LC power 750W] 
Audio
[ATH-A700] + [Asus Xonar DG] 
  hide details  
Reply
post #18 of 25
Thread Starter 
Quote:
Originally Posted by amder;13098139 
Also with USB you can only get up to 6KRO, so only 6 keys can be pressed at once with USB. Only P/S2 supports full NKRO. Which allows you to press any amount of keys down. But Im not even sure this keyboard supports full NKRO. As mine only has 2KRO.
Yes, your P/S2 is only 2KRO, to were the LCMUS-2 is 6KRO. NON of the G84-4100's do NKRO. I asked Cherry about this issue, but since I have no reason to push more than three buttons at once, I don't see the issue.

I need to go back and ask Cherry, but I thought they had stated that P/S2 is 2-4-6-KRO and only USB can be NKRO. I personally have not read 1 specification that has a P/S2 keyboard labeled as NKRO. Seen USB of 6 & NKRO though! I could have this backwards. If I am, after talking to Cherry, I will not hesitate to come correct. Just seems like some of the talk in here is the opposite of what a Cherry rep texted me yesterday.
Edited by PDXMark - 4/12/11 at 10:25am
post #19 of 25
Quote:
Originally Posted by PDXMark;13098268 
Yes, your P/S2 is only 2KRO, to were the LCMUS-2 is 6KRO. NON of the G84-4100's do NKRO. I asked Cherry about this issue, but since I have no reason to push more than three buttons at once, I don't see the issue.

I need to go back and ask Cherry, but I thought they had stated that P/S2 is 2-4-6-KRO and only USB can be NKRO. I personally have not read 1 specification that has a P/S2 keyboard labeled as NKRO. Seen lots of USB as NKRO though!

No modern keyboard does perfect NKRO over USB

Loads of keyboards offer NKRO over PS/2. Like mine, which is the steelseries 6gv2.
Toki
(10 items)
 
  
CPUGraphicsRAMHard Drive
[i7 860] [XFX 5870] [4x2gb] [WD 500gb] 
OSMonitorKeyboardPower
[W7] [HP LP3065 - CrossOver 27Q LED-P - Acer x243w] Ducky DK1087-CELLB Tenkeyless, MX Blue - Steels... [LC power 750W] 
Audio
[ATH-A700] + [Asus Xonar DG] 
  hide details  
Reply
Toki
(10 items)
 
  
CPUGraphicsRAMHard Drive
[i7 860] [XFX 5870] [4x2gb] [WD 500gb] 
OSMonitorKeyboardPower
[W7] [HP LP3065 - CrossOver 27Q LED-P - Acer x243w] Ducky DK1087-CELLB Tenkeyless, MX Blue - Steels... [LC power 750W] 
Audio
[ATH-A700] + [Asus Xonar DG] 
  hide details  
Reply
post #20 of 25
PS/2 doesn't use polling. It's a hardware interrupt based technology. Every event is reported to the CPU when it happens, whether it's been one microsecond or ten thousand.

USB polls the keyboard controller, then simulates a hardware interrupt.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Keyboards
Overclock.net › Forums › Components › Keyboards › Cherry ML switches.