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00:00:00 – 00:14:10
Mark discusses upgrading his CPU for better content creation and flight simulation. Dan from Wired to Fire recommends the AMD 7800X3D, highlighting its stacked V-cache technology which improves memory access and gaming performance. Tests conducted with the 7800X3D against Intel's 3900K using Microsoft Flight Simulator at 1440p and 4K resolutions reveal the 7800X3D's superior performance, lower temperatures, and power efficiency. Concerns about the 7800X3D burning are traced to motherboard issues, specifically with ASUS, which have been addressed by BIOS updates that no longer void warranties. The video concludes that the 7800X3D is the best choice for flight simulation due to its performance and cost efficiency.
00:00:00
In this part of the video, Mark welcomes Dan to the Sim Hangar channel for a discussion about upgrading CPUs. Mark explains his need to upgrade from his current 10900k CPU due to both content creation demands and his passion for flight simulation. He realizes that replacing the CPU could require a new motherboard and potentially an entire system rebuild. Dan, from the company Wired to Fire, initially suggests considering Intel’s 13900k or possibly an AMD Ryzen 9 7950X3D. However, he ultimately recommends the AMD 7800X3D for Mark’s needs. Dan’s role at Wired to Fire involves designing and creating specifications for custom flight simulators and gaming PCs, making him well-versed in the latest technology.
00:03:00
In this segment of the video, the discussion revolves around AMD’s 7800X3D chip, highlighting its architectural similarities with the popular 5800X3D, specifically focusing on its advantage for flight simulators. The key feature discussed is AMD’s stacked V-cache technology, which adds more level-3 cache on top of the CPU die, allowing faster memory access and larger memory pools, leading to higher FPS in gaming and flight simulators. The 5800X3D’s performance, despite being an eight-core, 16-thread processor, was notably impressive due to this technology, rivaling more expensive CPUs like Intel’s 12900K.
Additionally, a test was conducted using Microsoft Flight Simulator at 1440p and 4K resolutions to compare performance. The hardware setups used for the test included an Intel 3900K and an AMD 7800X3D, both with 32GB of Corsair 6000MHz DDR5 memory, differing only in their respective motherboards: an Asus Rog Z790H for Intel and an MSI X670P for AMD.
00:06:00
In this segment of the video, the presenter discusses the results from testing two systems equipped with the latest RTX 4090 graphics card and a 1000-watt power supply. Despite both systems being nearly identical except for the CPU and motherboard, there were surprising performance differences. Both systems were retested to verify the results, revealing significant disparities between the CPUs.
At 1440p resolution, the 7800X 3D CPU showed a one percent low of 67 and an average frame rate of 105, surpassing the 3900K, which scored 50 and 73, respectively. At 4K resolution, the 7800X 3D continued to outperform the 3900K, albeit with reduced differences indicative of CPU bottlenecks at higher resolutions. The 7800X 3D had a one percent low of 65 and an average of 98, while the 3900K had 53 and 76. The testing also indicated that the 7800X 3D runs significantly cooler than the 3900K, with other system components such as RAM showing similar performance metrics.
00:09:00
In this segment of the video, the presenter discusses the performance differences between the 3900K and the 7800X3D CPUs. Key points include the 3900K running nearly 20 degrees hotter and consuming more power (89 watts compared to 55-57 watts for the 7800X3D). Despite this, 55 degrees Celsius is considered a safe temperature for CPUs, well within operational limits. Additionally, tests on X-Plane 12 showed similar performance increases with the 7800X3D.
The conversation then shifts to concerns about reports of the 7800X3D burning. The issue was clarified as a motherboard problem rather than a CPU defect, specifically associated with ASUS motherboards. ASUS had been advising users to upgrade their motherboard BIOS, which initially voided warranties, but this policy has since been corrected. Users are now assured that upgrading the BIOS to avoid burning issues won’t affect their warranty. The discussion also hints at a voltage-related problem on the motherboard contributing to the burning issue.
00:12:00
In this part of the video, they discuss the system-on-chip (SoC) issue that caused catastrophic failures due to overheating. The expert recommends ensuring the SoC is updated to the latest version to avoid problems. The host then asks if the AMD 7800X3D chip is suitable for flight simulation, to which the expert agrees it is the best choice for peak performance. The segment concludes with the host thanking the guest and expressing that the 7800X3D chip is appealing due to its cost efficiency compared to other models. The host thanks viewers and signs off.