Pre-launch review of the Intel Core i9-13900K Raptor Lake CPU shows strong multi-threaded performance, 10% gaming improvement and higher power draw

Intel Core i9-13900K won’t be released until next month but enthusiastic citizen I was able to post a full review of Flagship Raptor Lake CPU.

Intel Core i9-13900K Raptor Lake CPU review shows big multi-threading gains, decent gains in gaming, all at a higher cost

We’ve already seen a slew of Intel Core i9-13900K and other Raptor Lake CPU benchmarks from various leaks and there’s nothing we don’t already know. However, the review from ESCM been cooperated with Raichu one, one of the most prominent leakers on Twitter who was very accurate in his reporting. The Citizen enthusiast himself was spot on with his information regarding the various upcoming CPUs. So first, the specs.

Screenshot of Intel Core i9-13900K CPU-z. (Image credits: Enthusiast Citizen @ Bilibili)

Intel Core i9-13900K 24 Core Raptor Lake CPU Specifications

The Intel Core i9-13900K is the flagship Raptor Lake CPU, featuring 24 cores and 32 threads in an 8 P-Core (Raptor Cove) and 16 E-Core (Gracemont V2) configuration. The CPU is configured with a 3.0 GHz base clock, a single-core boost clock of 5.8 GHz (1-2) cores, and an integrated boost clock of 5.5 GHz (all eight cores). The CPU features a built-in 68MB cache and a 125W PL1 rating of up to 250W. The CPU can also draw up to 350 watts of power when using Unlimited Power Mode Which we have detailed here.

  • Core i9-13900K 8+16 (24/32) – 3.0 / 5.8 GHz – 66 MB cache, 125 W (PL1) / 253 W (PL2)
  • Core i9-12900K 8+8 (16/24) – 3.2 / 5.2 GHz – 30 MB Cache, 125 W (PL1) / 241 W (PL2)

Intel Core i9-13900K Test Setup

For this specific review, the Intel Core i9-13900K was tested on both DDR5 and DDR4 platforms. An unnamed Z690 Taichi Razer version and Z790 motherboard were used although due to NDA, the actual product name cannot be revealed.

Intel Core i9-13900K Raptor Lake CPU AIDA64 Cache and Memory Standard. (Image credits: Enthusiast Citizen @ Bilibili)

Motherboards tested with DDR5-6000 CL30 as well as DDR4-3600 CL17 memory sets in conjunction with a Radeon RX 6900 XTXH graphics card. The NZXT Kraken X73 AIO was used to cool the CPU. The CPU can support native memory speeds of up to DDR5-5600 while Alder Lake only supports JEDEC native speeds of DDR5-4800.

Intel Core i9-13900K vs Core i9-12900K Performance Tests:

The test was divided into two parts where OneRaichu evaluated memory, bandwidth and cache performance between the Raptor Lake Core i9-13900K and Alder Lake Core i9-12900K while Enthusiast Citizen ran benchmark single-core, multi-core and gaming application tests. First, we have the latency standards and OneRaichu shows how the new loop bus design that comes with an enhanced frequency, allowing all P-Cores and E-Cores to achieve uniform latency and not drop to lower frequency resulting in higher latency like we’ve seen in CPUs Lake Alder.

while the IPC for P-Core does not see a significant boost as detailed here, the overall frequency and cache raise allow for higher overall single thread performance. Compared to Alder Lake, the Raptor Lake Core i9-13900K achieves a performance increase of 12.5%. Gracemont E-cores receive a slight increase in IPC performance of about 6% and adding more E-cores on the 13900K means we can see some significant increases in multi-threaded performance. The 13th generation flagship is seeing an average 42% increase in performance over the previous generation which is a huge jump.

There are also a handful of port-tested games and it looks like games that rely on CPU performance will see a decent boost, with an average of around 10%. While the FPS increases, the main improvement comes in the lows of 0.1% thanks to the increased L2 and L3 cache sizes in the 13th generation Raptor Lake CPUs. We’ve already seen how a greater amount of in-game cache helps AMD’s Ryzen 7 5800X3D. So to conclude the results presented in this review:

  • Intel Core i9-13900K “Raptor Lake” vs 12900K “Alder Lake” MT – + 42% improvement
  • Intel Core i9-13900K “Raptor Lake” vs 12900K “Alder Lake” ST – + 12.5% ​​improvement
  • Intel Core i9-13900K “Raptor Lake” vs. 12900K “Alder Lake” for gaming – + 10% improvement

But all this comes at the cost of a higher power. While the Intel Core i9-13900K processor consumes 253 watts on load within the AIDA64 FPU test, opening Unlimited Power Mode puts the Raptor Lake up to 343 watts. This is now a stress test and real-world power usage in games and apps will vary but these numbers will be shared later by Enthusiast Citizen. You can read the full review here. It remains to be seen if this significant performance increase will be enough for Intel to tackle AMD’s Ryzen 7000 processors which also significantly boosted single and multi-threaded performance. Well, we’ll have to wait for the dust to settle by October 20th next month.

‘Confirmed’ Comparison of Intel Raptor Lake and AMD Raphael Desktop CPUs

CPU family AMD Rafael (RPL-X) Intel Raptor LLC (RPL-S)
Operation knot TSMC 5 nm Intel 7
general engineering Zen 4 (Chiplet) Raptor Cove (P-Core)
Gracemont (E-Core)
Flagship SKU Ryzen 9 7950X Core i9-13900 K
Cores/Threads up to 16/32 up to 24/32
Total L3 cache 64 MB (+ 3D V-Cache) 36 MB
Total L2 cache 16 MB 32 MB
Total cache 80 MB 68 MB
Max Klux (1T) 5.85 GHz 5.8 GHz
Memory support DDR5 DDR5 / DDR4
memory channels 2 channel (2DPC) 2 channel (2DPC)
Memory speeds DDR5-5200 DDR5-5600
Platform support 600 Series (X670E / X670 / B650 / A620) 600 Series (Z690/H670/B650/H610)
700- Series (Z790/H770/B760)
PCIe Gen 5.0 Both GPU and M.2 (Extreme chipsets only) Both GPU and M.2 (700 series only but split)
Integrated graphics AMD RDNA 2 Intel Iris XE
Plug AM5 (LGA 1718) LGA 1700/1800
TDP(Max) 170 watts (TDP)
230 Watts (PPT)
125 W (PL1)
240 W + (PL2)
release September 2022 October 2022

news source: Video Cards