@OneRaichu just shared some interesting details on Twitter about the AMD Zen 4 Ryzen 7000 series, and Intel’s 13th Gen Raptor Lake Core desktop processors. First of all, the whistleblower claims that the cache configuration of the Zen 4 processor is quite large, which greatly alleviates the dependence on DRAM. Second, the second gear (Gear 2) @ DDR5-4800 is almost 15 ns higher than the first (Gear 1) @ DDR4-3200 due to the poor latency of DDR5 memory.
@OneRaichu has long shared revelations related to Intel / AMD CPUs, and now he has shared IPC performance data related to Zen 4 and Raptor Cove cores and added Intel’s 12th generation P core (Golden Cove) and 12th / 13th generation E. Kernel (Gracemont) comparison.
The comparison test uses a fixed clock rate of SPECCPU2017 Rate-1 @ 3600MHz and evaluates the impact of DDR5-4800 / 6000 frequency memory on CPU IPC performance.
DDR5-4800 IPC Performance Comparison
It can be seen that the excellent cache configuration is a lot of bonus points for AMD Zen 4 (it is not highly dependent on DRAM), and the high latency of DDR5 / Gear 2 mode will cause the Intel platform to be 15 ns higher than DDR4-3200 latency (but for IPC impact of only 2%).
Let’s talk about DDR5-4800 first, the SPECint scores of Intel’s 13th-generation Raptor Cove large core and AMD Zen 4 Ryzen 7000 CPU, indicate that its IPC performance is 2% higher than that of the 12th-generation Golden Cove.
In the Specfp benchmark, the Raptor Cove cores outperformed Golden Cove by 3%, and 2% ahead of AMD Zen 4—meaning that the IPC performance between AMD Zen 4 and Intel Raptor Cove cores is basically the same.
DDR5-6000 IPC Performance Comparison
The same is true for the DDR5-6000 memory configuration, with Intel Raptor Cove and AMD Zen 4 cores giving similar IPC results (6.81 vs 6.77), respectively.
Compared to Intel’s 12th Gen Golden Cove cores, the 13th Gen Raptor Cove is about a 1% improvement. In the Specfp test, its IPC performance is 4% higher than AMD Zen 4 and 3% ahead of Golden Cove.
In terms of small cores, the IPC performance of the 13th-generation Gracemont in the SPECint benchmark is 6% higher than that of the 12th-generation Gracemont, and the IPC of SPECfp is improved by 7%.
(Screenshot via WCCFTech)
To sum up, the IPC performance of the three architectures, Raptor Cove, Alder Lake and Zen 4, are all in the same echelon.
In addition to this, the main goals of the new generation of CPUs will be higher clock rates and cache structure improvements – which are very important for applications such as games – and we must also consider the CPU’s energy efficiency,
As for the performance of AMD Zen 4 Ryzen 7000 series and Intel 13th generation Raptor Lake desktop processors in real application scenarios, please wait patiently for new products to be launched.
