Earlier this month, AMD announced the Ryzen 7 4800U and Ryzen 9 4900HS as the upcoming flagship mobile processors for the Ryzen 4000 U-and H-series, respectively. Although AMD's tailoring the two chips to different markets, hardware leaker @_rogame has given us an alleged sneak peek at the potential performance difference between the two chips.
The Ryzen 7 4800U and Ryzen 9 4900HS (codename Renoir) share similar ingredients. Both APUs leverage AMD's Zen 2 microarchitecture and are product of TSMC's 7nm FinFET manufacturing process. Each processor has eight cores , 16 threads and 8MB of L3 cache . They even feature the same integrated graphics (iGPU), which consists of eight Vega graphics cores that peak at 1,750 MHz. But that's where the similarities end.
The Ryzen 7 4800U is aimed at thin-and-light laptops, so it's forced to run with a 1.8 GHz base clock and 4.2 GHz boost clock to respect the 15W TDP (thermal design power) limit. The Ryzen 9 4900HS, part of AMD's HS design standard for the best gaming laptops , has a higher TDP. With a more generous 35W envelope, the Ryzen 9 4900HS operates with a 3.0 GHz base clock and 4.3 GHz boost clock.
According to the leaker, the Ryzen 7 4800U system was using LPDDR4x memory clocked at 4,266 MHz. This configuration enabled the Ryzen 7 4800U to achieve Physics and Graphics scores of 16,171 point and 3,543 points, respectively.
The Ryzen 9 4900HS reportedly put up a Physics score of 21,289 points and a Graphics score of 4,085 points in the same benchmark. Therefore, the Ryzen 9 4900HS appears to deliver up to 31.6% better performance, at least on the Fire Strike benchmark.
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The iGPU performance looks like it's up 15.3% higher on the Ryzen 9 4900HS as well. This could be explained by the Ryzen 9 4900HS' 20W higher TDP allowing the iGPU to sustain higher operating clocks for a longer period.
The Ryzen 7 4800U's greater number of cores help push the chip ahead of its Intel rivals, such as the Intel Core i7-1065G7, a quad-core Ice Lake chip, and the Core i7-10710U, a hexa-core Comet Lake part. Intel's offerings purportedly scored 11,996 points and 13,723 points, respectively, on the Physics test. Therefore, the Ryzen 7 4800U is presumably up to 34.8% and 17.8% faster than the i7-1065G7 and i7-10710U, respectively.
An unknown Tiger Lake-U (TGL-U) processor at 2.7 GHz seemingly achieved a Physics score of 13,030. The leaker didn't specify if it's the same quad-core Tiger Lake-U part that previously appeared at SiSoftware. Performance-wise, the Ryzen 7 4800U looks like it offers around 24.1% higher performance than the mysterious Tiger Lake-U. We were more interested in the iGPU performance, but, unfortunately, the leaker didn't reveal the Graphics score for the Tiger Lake-U processor.