delta t and real temp

[grandpatzer]

So Ive read bunch of radiator reviews and it seems to be common to measure the water temperature.

In real life if Radiator A has delta t 15c and Radiator B has 17c.

Lets say a 7970 is 55c on load with A, would this same 7970 be 57c on load with B?

Or did I miss something, also I would think I need to fin reviews where the temperature was run long enough to stabilize temps.

Maybe runnin 5min show delta t difference only 2c, but running 5h shows difference delta t 15c etc........

 

[S_I_N]

Delta is the difference between ambient temp and recorded temp so if your room is say 22c and the device ur measuring is 58c then the delta t is 36c so yes the first rad would be a tad bit better. but remember there are many things to lok at with rads. heat load is one flow rate is another and if it'll fit ur case lol or if it could be made to fit. 2c is not that much to fidget with bro. because other components can affect temps as well. Like this block versus that block there may be a 2c differential between them as well.

 

[sheroo]

Delta is the difference between ambient temp and recorded temp so if your room is say 22c and the device ur measuring is 58c then the delta t is 36c so yes the first rad would be a tad bit better. but remember there are many things to lok at with rads. heat load is one flow rate is another and if it'll fit ur case lol or if it could be made to fit. 2c is not that much to fidget with bro. because other components can affect temps as well. Like this block versus that block there may be a 2c differential between them as well.

Out of interest how much does flow rate effect your temps? I'm guessing here, but would you want to have your blocks with a high flow rate to remove the heat as quickly as possible, but your rads to have a low flow rate so that they can give up as much heat as possible? Or doesn't it work like that?

 

[grandpatzer]

Delta is the difference between ambient temp and recorded temp so if your room is say 22c and the device ur measuring is 58c then the delta t is 36c so yes the first rad would be a tad bit better. but remember there are many things to lok at with rads. heat load is one flow rate is another and if it'll fit ur case lol or if it could be made to fit. 2c is not that much to fidget with bro. because other components can affect temps as well. Like this block versus that block there may be a 2c differential between them as well.

thanks for good reply.

So unless I'm missing something, generaly speaking a 40c cpu and 60c gpu when having a better rad I should be seeing 38c on cpu and 58c on gpu ignoring flow and other factors just looking at the rad differences?

Also according review, my 360 rad has 196l/min vs 209 for phobya 360

delta t is 14.9-13.4= 1.5c.

so the phobya has 13 l/min more and a delta t of 1.5c.

so it seems to be not a big upgrade for me to buy the phobya rad?

phobya is 60mm thick mine is 45mm thick, so I'm suprised at small difference?

Out of interest how much does flow rate effect your temps? I'm guessing here, but would you want to have your blocks with a high flow rate to remove the heat as quickly as possible, but your rads to have a low flow rate so that they can give up as much heat as possible? Or doesn't it work like that?

I'm pretty sure you want same flow everywhere, so if you have 100% flow through blocks and 80% flow through rad then the whole system will get 80% flow which is bad, you want as much flow as possible.

^^^atleast I think this is how it should be.

 

[S_I_N]

my understanding is with higher flow rate you put more cool water on the block faster with a slower flow rate the water hits its peak faster making its cooling less effective.

 

[sheroo]

my understanding is with higher flow rate you put more cool water on the block faster with a slower flow rate the water hits its peak faster making its cooling less effective.

That makes sense for blocks, but if the water flows too quickly through the rad then won't that compromise its cooling ability?

 

[S_I_N]

good point sheroo guess its a want cake and eat it too situation lol