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AMD Ryzen 4000 'Renoir' APU Runs Crysis Without Any Cooling Solution:
Fritzchens Fritz over at Twitter, who has provided several close-up die shots of CPUs and GPUs in the past, has managed to run a Ryzen 4000 APU without any cooling solution attached to it. Using the Ryzen 3 4300U, a four core and four-thread processor that's clocked at a base clock of 2.7 GHz base and 3.7 GHz boost clock, the chip was tested under an intense scenario where it was provided no active or even passive cooling.
[...] The CPU doesn't even feature an IHS to carry off the heat from the die which makes this little test even more brutal but the chip didn't even break a sweat. This was mostly achieved using the Renoir Mobile Tuning tool that helps set the original temperature limit down to 90C.
[...] But it's not the Cinebench R15 score that makes this little test interesting but rather a full run of the Crysis benchmark. The APU also houses five enhanced Vega compute units which equates to a total of 320 stream processors running at 1400 MHz. Like the CPU, the GPU also has to manage thermal limits by reducing clock speeds but despite no cooling solution, the chip was able to run a complete loop of the Crysis benchmark without a hiccup.
(Score: 3, Informative) by takyon on Tuesday June 16 2020, @12:43PM (2 children)
Crysis is now an older title, Renoir is pretty good as expected, and it's designed to run at as low as a 10W TDP, a potential passive cooling target.
One thing to note about Renoir is that AMD sacrificed potential GPU performance (increased performance overall, but with reduced GPU cores and less die space used by graphics) because it's intended to be paired with discrete mobile GPUs in laptops. The focus of Renoir was to provide 4-8 strong CPU cores in mobile, and it's cheaper than it would be if it had more die space for graphics. For this reason, Intel's Tiger Lake mobile CPUs will have slightly better GPU performance than mobile Renoir, but the 15W TDP versions will only have 4 cores.
This was more interesting to me, the first Navi product (IIRC) with High Bandwidth Memory:
AMD Announces Radeon Pro 5600M Navi GPU with HBM2 - Inside Apple's MacBook Pro 16" [anandtech.com]
AMD Radeon Pro 5600M Mobile GPU For 16-inch MacBook Pro (NAVI12 is here) [guru3d.com]
[SIG] 10/28/2017: Soylent Upgrade v14 [soylentnews.org]
(Score: 1) by arachnist on Wednesday June 17 2020, @05:51AM (1 child)
Except not really. There are two lines of renoir mobile chips, 4***U and 4***H, and the H chips have slightly slower integrated graphics, but significantly beefier cpu, while the U chips are supposed to have slightly better integrated gpu, but have a lot lower thermal budget overall.
(Score: 2) by takyon on Wednesday June 17 2020, @10:20AM
https://en.wikipedia.org/wiki/Ryzen#Mobile_3 [wikipedia.org]
Ryzen 3 4300U = 5 CUs, 1400 MHz, 896 GFLOPS
Ryzen 5 4500U = 6 CUs, 1500 MHz, 1152 GFLOPS
Ryzen 5 4600U = 6 CUs, 1500 MHz, 1152 GFLOPS
Ryzen 7 4700U = 7 CUs, 1600 MHz, 1433.6 GFLOPS
Ryzen 7 4800U = 8 CUs, 1750 MHz, 1792 GFLOPS
Ryzen 5 4600H = 6 CUs, 1500 MHz, 1152 GFLOPS
Ryzen 7 4800H = 7 CUs, 1600 MHz, 1433.6 GFLOPS
Ryzen 9 4900H = 8 CUs, 1750 MHz, 1792 GFLOPS
Unless you mean comparing 4800U to 4800H. But there are equivalent options in each stack.
GPU core counts have dropped from the Ryzen 3000 mobile APUs: https://en.wikipedia.org/wiki/Ryzen#Mobile_2 [wikipedia.org] but each CU is more powerful than before.
I could have sworn I had also seen a bunch of 4800U and 4700U laptops with discrete GPUs, but I'm not finding them.
All of the Renoir [wikichip.org] chips are 156 mm2. The previous Picasso [wikichip.org] chips are 209.78 mm2. The "7nm" TSMC node that Renoir is made on is mature now and achieving very high yields. So AMD doubled core counts with Renoir, while shrinking the graphics and overall die size. It's a "budget" design intended to be paired with discrete GPUs for the best mobile gaming performance, and a big disruption to Intel's lineups.
This video helps explain it and other rumored upcoming APUs. Segment starting at 6:46:
https://www.youtube.com/watch?v=UMJZOjbsMeE [youtube.com]
[SIG] 10/28/2017: Soylent Upgrade v14 [soylentnews.org]