AMD OS6274WKTGGGU 16-Core Socket G34 Server Processor

Overview

The AMD OS6274WKTGGGU is a 16-core Opteron 6274 server processor built for multi-socket G34 platforms that need parallel throughput over single-thread speed. Running at 2.20GHz base clock with 16MB of cache, this processor targets refresh and repair projects on existing Opteron 6200-series server fleets rather than new-build deployments — if you're keeping a G34 chassis in service for another duty cycle, the OS6274WKTGGGU is a direct path to restoring full core count without replacing the motherboard.

Key Features

• 16-Core Design: Sixteen physical cores split across two 8-core modules gives you real parallel throughput for virtualization hosts, batch processing, or any workload that scales across threads rather than depending on single-core speed.
• 2.20GHz Base Clock: A conservative clock speed keeps the chip inside its 115W thermal envelope even with all 16 cores loaded — useful when you're running dense multi-socket configurations and don't want thermal throttling under sustained load.
• 16MB Cache: A shared 16MB cache pool reduces main-memory round trips on data sets that get reused across cores, which matters most on database and virtualization workloads where cache misses are the real bottleneck.
• 32nm Process Technology: The 32nm die shrink (versus earlier Opteron generations) is what makes 16 cores fit inside a 115W power budget in the first place — it's the enabling spec behind the core count and TDP numbers below.
• 115W Thermal Design Power: A 115W TDP tells you what cooling and power delivery to plan for at the socket — confirm your G34 board's VRM and heatsink are rated for this before populating every socket in a multi-CPU chassis.
• Socket G34 LGA-1944: This is a direct-fit part for existing Socket G34 motherboards only — it will not drop into any other Opteron or EPYC socket, so confirm your board's socket type before ordering.
• HyperTransport 6400MHz: HyperTransport handles the CPU-to-CPU and CPU-to-chipset links on multi-socket G34 boards; 6400MHz keeps inter-socket bandwidth from becoming the bottleneck in 2P and 4P configurations where cores are waiting on data from a neighboring socket.

Integration & Compatibility

The OS6274WKTGGGU is a like-for-like upgrade or replacement part for any server or workstation built around Socket G34 LGA-1944 — think existing Opteron 6100/6200-series deployments where you're maxing out core count on hardware you already own. Because it shares the G34 socket and HyperTransport interconnect with the rest of the 6200 series, mixed-CPU multi-socket configurations should stay within the same processor family per your motherboard vendor's supported CPU list — check that list before pairing this chip with a different Opteron model in a 2P or 4P board. This part sits in the CPU category alongside compatible server motherboards and heatsinks and cooling systems sized for a 115W G34 socket. For a broader look at matching CPU, board, and memory generations correctly, see the server configuration guide. If your project calls for a newer socket generation instead of a G34 refresh, browse the current processors line for EPYC-based alternatives, and pair the finished build with server memory validated for your specific motherboard's supported speeds.

Frequently Asked Questions

Q: What socket does the OS6274WKTGGGU use?

A: The OS6274WKTGGGU uses Socket G34 LGA-1944. It is only compatible with motherboards built for that socket.

Q: How many cores does the OS6274WKTGGGU have?

A: It is a 16-core processor running at a 2.20GHz base clock with 16MB of cache.

Q: What is the TDP of the OS6274WKTGGGU?

A: 115W. Confirm your motherboard's VRM and heatsink are rated for this before populating multiple sockets.

Q: Can I mix the OS6274WKTGGGU with a different Opteron model in a dual-socket board?

A: Check your motherboard vendor's supported CPU list first — multi-socket configurations typically require matched or explicitly supported processor combinations within the same family.

Q: What HyperTransport speed does this processor support?

A: 6400MHz, which governs CPU-to-CPU and CPU-to-chipset bandwidth on multi-socket G34 boards.

Ted Perry

The OS6274WKTGGGU is a straightforward core-count play — 16 cores at 2.20GHz on Socket G34, and I mostly see these go into aging 2P and 4P Opteron chassis where the goal is squeezing more virtualization density out of hardware that's already paid for.

Technical Highlights:

• 16 cores / 16MB cache: Two 8-core modules sharing 16MB of cache — good for VM hosts and batch jobs that spread load across threads instead of leaning on one fast core.
• 115W TDP: Stays inside a 115W envelope at 2.20GHz base clock, which is what lets you populate a 4-socket G34 board without redesigning cooling.
• 6400MHz HyperTransport: Keeps inter-socket bandwidth ahead of the cores in multi-CPU boards — matters more as you add sockets, less in a single-socket build.

Deployment Considerations:

• This is a Socket G34 LGA-1944 part only — verify your board's socket before ordering, it will not fit any other Opteron or EPYC socket.
• In 2P/4P configurations, cross-check your motherboard vendor's supported CPU combination list before mixing this with a different Opteron model in the same chassis.

Reach for the OS6274WKTGGGU when you're extending the service life of an existing Opteron 6200-series virtualization host and need to restore or add core count without a board swap — not for a ground-up build, where a current-generation EPYC platform is the better starting point.