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Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →For an RTX 2080 Ti gaming PC, NVIDIA specifies 16 GB of system RAM as recommended (8 GB minimum) and a 650 W or greater power supply with two 8-pin PCIe power connectors. Check the exact graphics-card model and the rest of your build before buying: partner cards can use different power and connector arrangements.
How much system RAM does an RTX 2080 Ti PC need?
NVIDIA’s GeForce RTX 2080 Ti User Guide lists 8 GB of system memory as the minimum and 16 GB as recommended. For a straightforward gaming build, 16 GB is the clearest manufacturer-backed target in the available documentation.
The card’s 11 GB of GDDR6 is video memory, or VRAM, used by the graphics card. It is separate from system RAM and does not replace the memory installed in the PC. NVIDIA lists the VRAM and system-memory recommendations separately on its RTX 2080 Ti specifications page.
The guide specifies memory capacity, not a universally compatible RAM generation or kit. Check the motherboard and processor specifications before choosing memory. The cited NVIDIA documentation establishes a 16 GB recommendation; it does not establish a universal 32 GB requirement or compare memory needs across current games and workloads.
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#1 Best Overall
- PSU 8P - 8P (6+2): PCIE 8 pin connector for connecting to the power supply . and PCIe 8-pin (6+2) connectors to connect to the graphics card
- Compatibility: compatible with Seasonic. Compatible with (X-1050XM2/X-1250XM2) (SS-660/760/860XP2 series) (X-650 KM3/X-750 KM3/X-850 KM3) (SS-1050/1200XP3) (Seasonic). _Snow_Snow_Silent 750W/1050W) (M12II Evo Series 520/620/650/750/850) (Seasonic Focus+ Series)
- User Guide: Insert the [PSU] single male into the Modular Power Supply and the 6+2 pin [PCI-E] into the GPU (graphics card). Note: Please check the brand, model and modular ports of your power supply before placing an order, or contact us if you are not sure.
- Graphics card for GTX1080, GTX1080Ti, RTX2060, RTX2070, RTX2080, RTX2080Ti, RTX3060, RTX3070, RTX3080 Ti, RTX3090 Ti, RX570, RX580, RX590, RX5700 XT, RX6700 XT, RX6800 XT, RX6900 XT.
- Product Features: Length (including connector): 25.5 inches (65 cm), Gauge: 1007-18AWG (standard copper wire with tin coating), can not be used for really high performance graphics cards (only suitable for graphics cards, not for motherboard).
What power supply does an RTX 2080 Ti need?
NVIDIA’s guide specifies a 650 W or greater system power supply and two 8-pin PCIe supplementary power connectors. These are the documented baseline requirements, not a guarantee that every 650 W PSU will suit every build: the unit must have the required connectors, and its capacity must account for the CPU and other components as well as the graphics card.
NVIDIA lists the RTX 2080 Ti’s graphics-card power at 250 W and gives a 650 W recommended system supply on its product specifications page. The page notes that PSU recommendations are based on a PC configuration and that a pre-built system may need less depending on its configuration. Treat 650 W as the manufacturer’s baseline for planning, not a precise calculation for every combination of processor, drives, fans, or overclocking.
Rank #2
- Model:PLD09220S12H
- Voltage: DC 12V/Stroom: 0.55AMP/Power Connector: 4-Pin Header
- Current: 0.55A Fan Afmetingen (L x B x H): ca. 87mm * 87mm * 20mm
- Fan Dimension (L x W x H): approx. 87x87x22mm Montage gat afstand: ca. 42mm * 42mm * 42mm (Center)
- For EVGA RTX 2080 Ti XC ULTRA Gaming
Why the exact RTX 2080 Ti model matters
Board-partner versions can differ in power consumption and the connectors they require. Two MSI models illustrate why it is worth checking the specification for the exact card rather than relying only on the GPU name:
| RTX 2080 Ti model | Card power | PCIe power connectors | Recommended system PSU |
|---|---|---|---|
| MSI VENTUS GP OC | 250 W | Two 8-pin | 650 W |
| MSI GAMING Z TRIO | 300 W | Two 8-pin plus one 6-pin | 650 W |
These figures come from MSI’s VENTUS GP OC specification and GAMING Z TRIO specification. They are examples of model variation, not specifications for every RTX 2080 Ti card.
Quick Recap
Best Value
- Ensures optimal performance and reliability with your NVIDIA RTX graphics cards.
Rank #4
- Dramatically improved cable management
- Supports a variety of different PCI-E connections including adjustable spacing
- Integrated Solid State capacitors give you power filtering
- Easy Installation
Rank #3
- 80 PLUS GOLD CERTIFIED
- 10-year limited warranty, guaranteeing long term reliable operation
- Fully modular design
- ATX 3.1 & PCIE 5.1
What to check before buying RAM or a PSU
- RAM: Plan around 16 GB of system memory, then confirm the kit’s compatibility with your motherboard and processor.
- PSU capacity: Start with NVIDIA’s 650 W-or-greater baseline, then account for the complete system configuration.
- PSU connectors: Confirm the unit has the PCIe connectors required by your exact card. A 650 W label alone does not establish connector availability.
- Card specification: Look up the precise board-partner model. Its power draw and connector arrangement may differ from NVIDIA’s reference baseline.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
