# LCD monitor Hz?

#### Laurijan

Hi!

I just bought a BenQ E2400HD flat screen and am wondering why it lets me set 50, 59 and 60Hz at 1920x1080 resolution?

I thought that only the response time (in my case 2ms) matters

Lauri

#### 3870x2

HZ is the amount of times your screen refreshes per second. Set it at 60hz and forget about it.

#### Laurijan

HZ is the amount of times your screen refreshes per second. Set it at 60hz and forget about it.
How do i calculate 2ms (T) from 60Hz (f)?
1/T=f doesnt work (0,0166, T=16,6ms)

#### HolyCow02

##### New Member
the 2ms is colors from Gray to Gray (GTG) which isn't involved with the screen refresh rate (I believe, im not 100% sure on this though)

#### Laurijan

the 2ms is colors from Gray to Gray (GTG) which isn't involved with the screen refresh rate (I believe, im not 100% sure on this though)
Yeah at the shop´s site where i bought it it reads 2ms GTS

#### spearman914

##### New Member
the Hz refresh rate only matters lot on CRT monitors, no big impact on LCD's.

#### tigger

##### I'm the only one
60hz refresh is fine on an lcd.

#### farlex85

Refresh Rate (HZ) and Response Time (ms) are two different measures. The refresh rate is how quickly the screen refreshes itself, or changes. On LCD's however the if there is no action then they don't refresh at all. They are constant until they need to refresh (CRTs refresh constantly, and in a different way, making this a more critical measure for them). Only when there is change do they need to refresh, and 60hz is generally enough. Some LCDs will have capabilities of 120HZ refresh rate, which changes the way motion looks, as it fills in picture where we are not accustomed to seeing it, and some plasmas go to 480hz, but typically all flat panels are at 60hz.

Response time is how quickly info received by the monitor can be displayed on the screen. Obviously the lower this number is the smoother changes in the info will be. If it's too long you get trails or ghosting, which is a result of the screen being unable to catch up. Sort of.

Long story short, leave it at 60.

#### HolyCow02

##### New Member
Refresh Rate (HZ) and Response Time (ms) are two different measures. The refresh rate is how quickly the screen refreshes itself, or changes. On LCD's however the if there is no action then they don't refresh at all. They are constant until they need to refresh (CRTs refresh constantly, and in a different way, making this a more critical measure for them). Only when there is change do they need to refresh, and 60hz is generally enough. Some LCDs will have capabilities of 120HZ refresh rate, which changes the way motion looks, as it fills in picture where we are not accustomed to seeing it, and some plasmas go to 480hz, but typically all flat panels are at 60hz.

Response time is how quickly info received by the monitor can be displayed on the screen. Obviously the lower this number is the smoother changes in the info will be. If it's too long you get trails or ghosting, which is a result of the screen being unable to catch up. Sort of.

Long story short, leave it at 60.
Perfect explanation!