John Carmack
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- Sep 10, 2016
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wow impressive.power consumption at idle , Ryzen beats Intel 6200U (HP Spectre x360 15-ap012dx) ! Hope I get it.
Not apples to apples. The Intel models have 4K screens which eat more power.
wow impressive.power consumption at idle , Ryzen beats Intel 6200U (HP Spectre x360 15-ap012dx) ! Hope I get it.
Not apples to apples. The Intel models have 4K screens which eat more power.
At same nits they consume the same, isnt it...
No. It isn't only the backlight. The screen has switching transistors at each pixel. There are 4X as many of these transistors in a 4K screens.
Transistors are used as switches and account for nothing, it s the leds that consume the power, here there are 4x the led count per unity of surface, unless the leds used in 4K screens are of abyssimal efficency they will produce the same luxes at a given power as a screen that has half the led count, this latter will have its leds driven with twice the power to get the same screen light as the 4K screen...
That and usually it's slightly more intensive to output a 4K image from the hardware, which needs to happen even when idle.No there aren't 4x the LED count. The LED is the back light. The screen is the LCD based. The transistors control LCD twist status, and more transistors do consumer more power.
A 4K LCD screen of the same size/brightness will consumer more power than an HD screen, so screen resolution is a confounding factor for something like idle power.
And yet, Apple MacBook Pro retina display (IPS) from latest generation is using less power than non retina TN panel from mid 2012 MBP. While having 4 times bigger resolution( 2880x1800 vs 1440x900).No there aren't 4x the LED count. The LED is the back light. The screen is the LCD based. The transistors control LCD twist status, and more transistors do consumer more power.
A 4K LCD screen of the same size/brightness will consumer more power than an HD screen, so screen resolution is a confounding factor for something like idle power.
If it would have any type of dedicated high bandwidth memory and was sold on desktop...Its just nothing but impressive. It crushes the intel solution. No other way to frame 130% difference all other things more or less the same if not better. If anyone want a kbl be my guest. Useless overpriced stuff vs this imo.
Naa. We have like 2 desktops in the house with powerfull stuff. But all members have a 15w machine for school/work/light gaming.If it would have any type of dedicated high bandwidth memory and was sold on desktop...
Since the Internet likes comparing wildly different laptops, I thought: how accurate the "Total system power" sensor is in HWiNFO?
Acer E5-575G-55KK: Intel Core i5-7200U -0.115 V, 2x8 GB RAM, {NVIDIA GeForce 940MX (GM107-B variant) 997.5 MHz, 2 GB GDDR5 1.6 GT/s}, built-in display off, HDD replaced with SSD.
~36 W
I disconnected charger and tested again with same setup.On a laptop the best way to measure the actual total power draw is to monitor the battery discharge rate.
AMD isn't likely to sell an SoC into an Apple laptop anytime soon, so that's not really a concern.
AMD chips tend to go into lower cost laptops whereas LPDDR is for more expensive computers, so it's not a surprise that Raven Ridge only supports standard DDR4. The systems AMD will reasonably have a chance of winning with these chips aren't expensive enough for LPDDR to be viable.
No there aren't 4x the LED count. The LED is the back light. The screen is the LCD based. The transistors control LCD twist status, and more transistors do consumer more power.
A 4K LCD screen of the same size/brightness will consumer more power than an HD screen, so screen resolution is a confounding factor for something like idle power.
And if the lcd controller (that gets its data from the gpu) that switches al those tiny transistors consumes more power than a HD screen controller, i would say that depend on what process it is build.
It's a good product but it's first generation for Zen mobile so I don't expect anything extraordinary. It'll definitely improve AMD's monetary situation that's for sure. I'll build at least one system based on the desktop raven when it comes.AMD clearly has the better product with RavenRidge, lets see if they can manage to take advantage of it and make the money they should make from a product like that.
If one was being smart about it, wouldn't you rig it so only changed pixels switch? There is no reason to refresh static pixels. If you have a mostly static image, you could cut down severely on panel refresh rates too. Don't exactly need 144Hz refresh rate to read a page of text (though its nice).
Disclaimer, I only know the basics of panel technology...
Yes, it's Zen+ cores.This may seem like a really dumb question but... why the 2 in 2700u and 2500u? Wouldn't the 2 indicate Zen+? I guess my question is why the mobile chip numbers start with a 2 when the desktop versions start with a 1.
They'd have to dwonclock the ram as well to 2400.Alrighty then... Zen+ cores it is. Cool. Now I guess the question is has anyone down-clocked a desktop Ryzen version 1 chip to meet the clock speeds of one of these mobile chips and measured the IPC difference? If so, has IPC been increased?