Same cores BUT higher TDP, more heat ?

[Shadowman]

Just trying to get my head around this and this is only a example of a specific cpu. I was looking at the Intel i9 7920x and i9 9920x both are 12 cores but one has a TDP (Thermal Design Power) of 140W (7920x) and  other one has a TDP of 165W (9920x) both are skylake-x  7th and 9th gen. My question is if both are overlocked to the same frequency and same voltages are applied say 4.6ghz at 1.23v for both obviously everything else stays the same cooler, case etc..... wouldn’t the 7920x run more cooler because of the 140 TDP ? the only thing the 9920x has more is the cache which is 19.25mb compared to the 7920x which has 16.50mb. I mean what are the real advantages except for more heat?

[knightslugger]

wrapping your head around TDP is a loosing battle. They are made up numbers based on made up numbers.

[Jurrunio]

TDP just doesnt mean anything, Intel played with it too much. Otherwise how could you explain 9980XE and 9900X (18 and 10 core) both having 165w TDP?

 

7 minutes ago, Shadowman said:

wouldn’t the 7920x run more cooler because of the 140 TDP ?

if anything the Skylake-X CPU will run hotter because Skylake-X Refresh (9000) uses soldered IHS.

 

8 minutes ago, Shadowman said:

the only thing the 9920x has more is the cache which is 19.25mb compared to the 7920x which has 16.50mb.

More cache = more performance in some workloads

[Shadowman]

4 minutes ago, Jurrunio said:

if anything the Skylake-X CPU will run hotter because Skylake-X Refresh (9000) uses soldered IHS.

But isn't soldered IHS meant to be better then that toothpaste intel used on the 7th gen skylake x?

[Jurrunio]

Just now, Shadowman said:

But isn't soldered IHS meant to be better then that toothpaste intel used on the 7th gen skylake x?

exactly what I said. Skylake-X is 7000 series

[Vishera]

TDP means nothing nowdays,those numbers are tweaked and tuned for marketing purposes and don't represent reality.

[Shadowman]

6 minutes ago, Jurrunio said:

exactly what I said. Skylake-X is 7000 series

Sorry my bad.

[vanished]

TDP is intended to give manufacturers some idea of what performance a cooler needs to handle the chip, but it is a loose approximation of real world consumption at best.  In cases like the 9900k, it can differ by more than 2x from the way most people actually run their systems.  If you really want to investigate this you'll need to look at reviews that specifically tested CPU power consumption under various (stated) conditions.