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Black mid-tower gaming desktop with RGB keyboard and mouse

CyberpowerPC

CyberpowerPC GML70420 gaming PC Ryzen 9 9900X3D 32GB DDR5 RTX 5070 2TB NVMe

SKU CH-X3W5-FDTHG MPN GML70420

Gaming desktop with a 12-core Ryzen 9 9900X3D processor, 32GB DDR5 memory, 2TB PCIe 4.0 NVMe storage and GeForce RTX 5070 graphics running Windows 11 Home

  • TypeGaming & Entertainment
  • AI FeaturesAI Ready
  • UsageConsumer
  • ColorBlack
  • ProcessorAMD Ryzen 9 9900X3D
  • Processor Main Features64 bit 12-Core Processor
  • 12-core Ryzen 9 9900X3D with 128 MB L3 cache for multi-thread speed
  • 32 GB DDR5 memory supports up to 192 GB total capacity
  • RTX 5070 12 GB GPU delivers modern graphics performance
  • 2 TB PCIe 4.0 NVMe SSD provides fast storage access
  • 1000 W power supply and liquid cooling keep components stable

Ryzen 9 9900X3D 12-core desktop

This CyberpowerPC GML70420 is a pre-built gaming desktop powered by a 12-core AMD Ryzen 9 9900X3D processor with 128 MB L3 cache. It ships with 32 GB of DDR5 memory, a 2 TB PCIe 4.0 NVMe SSD and an NVIDIA GeForce RTX 5070 graphics card. Windows 11 Home is pre-installed and a 1000 W power supply drives the system.

Ideal for high-refresh 1440p gaming and multitasking

The 12-core CPU and RTX 5070 suit players who want high frame rates at 1440p and creators who run memory-hungry applications alongside games. Buyers who need more than 32 GB of RAM or additional internal storage bays should look at a different platform.

32 GB DDR5 memory capacity

The system includes 32 GB of DDR5 across four slots with a maximum supported capacity of 192 GB. This single figure determines whether the desktop meets your current workload or requires an immediate memory upgrade.

Highlights

  • 12-core Ryzen 9 9900X3D with 128 MB L3 cache for multi-thread speed
  • 32 GB DDR5 memory supports up to 192 GB total capacity
  • RTX 5070 12 GB GPU delivers modern graphics performance
  • 2 TB PCIe 4.0 NVMe SSD provides fast storage access
  • 1000 W power supply and liquid cooling keep components stable

Specifications

BrandCyberpowerPC
ModelGML70420
TypeGaming & Entertainment
AI FeaturesAI Ready
UsageConsumer
ColorBlack
ProcessorAMD Ryzen 9 9900X3D
Processor Main Features64 bit 12-Core Processor
Cache Per Processor128 MB L3 Cache
Memory32GB DDR5
Storage2TB PCIe 4.0 NVMe
GraphicsNVIDIA GeForce RTX 5070
EthernetGigabit Ethernet
Power Supply1000W
KeyboardUSB RGB Keyboard
MouseUSB RGB Mouse
Operating SystemWindows 11 Home
ChipsetAMD B850
CPU TypeAMD Ryzen 9 9000 Series
CPU NameAMD Ryzen 9 9900X3D
L2 Cache Per CPU12 MB
L3 Cache Per CPU128 MB
CPU Main Features64 bit 12-Core Processor
GPU/VGA TypeGeForce RTX 5070
Memory Capacity32GB DDR5
Memory Slot (Total)4
Maximum Memory Supported192 GB
SSD2TB NVMe
Optical Drive TypeNo
Audio ChannelsIntegrated 7.1 Channel Audio
LAN Speed10/100/1000Mbps
WLAN802.11ax Wireless LAN
WiFi GenerationWi-Fi 6
BluetoothBluetooth 5.3
Front USB3
Video Ports1 x HDMI / 3 x DisplayPort
Rear USB5
PCIe Slots1 x PCI Express x 16
2 x PCI Express x 1
2 x M.2
Dimensions (H x W x D)18.1" x 9.2" x 20"
Weight40 lbs.
Shipping weight20.41 kg
Package size610 × 603 × 343 mm

Questions about this item

How do I install additional DDR5 memory in the four slots on the B850 motherboard, and what step do people often miss?

Power off the system, open the case, align each DDR5 module with the slot notch and press firmly until both retention clips click; the step most people miss is enabling EXPO in the BIOS so the new memory runs at its rated speed instead of the default JEDEC frequency.

Which component will likely need replacement first during the life of this PC?

The 1000W power supply is the part most likely to require replacement after several years of continuous high-load gaming, as capacitors age faster than the Ryzen 9 9900X3D, RTX 5070 or the 2TB NVMe SSD.

What thermal limit appears first when the Ryzen 9 9900X3D and RTX 5070 run sustained workloads inside this chassis?

The CPU typically hits its thermal throttle point before the GPU, because the liquid cooler must dissipate the 12-core processor's heat in a shared loop while the RTX 5070's own cooler has a direct path to exhaust.

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