In an effort to best demonstrate multiple configurations, we first tested our system at stock frequencies using 800 MHz memory at 8-8-8-24-2T timings. Those are the same settings used in February's Llano-based overclocking story. Then, we overclocked Corsair's Vengeance kit to 933 MHz (the architecture's highest official data rate) using 9-9-9-24-29-1T timings, but kept stock CPU and GPU speeds.
We're also including a standard overclock using the same 933 MHz memory setting, changing only the CPU and GPU multipliers, but not the reference clock. This gives us 3.6 GHz processing cores and a 960 MHz GPU.
Finally, we include the highest memory overclock, a 117 MHz reference clock, 3627 MHz CPU cores, a 936 MHz GPU, and 1092 MHz (2184 MT/s DDR3) memory at 10-10-10-27-35-2T.
We're ultimately interested in how our all-out overclock compares to a discrete Radeon HD 6670 DDR3. So, we installed it in the overclocked system and disengaged its on-die GPU.
| Interface | Socket FM1 | ||||
|---|---|---|---|---|---|
| CPU/APU | AMD A8-3870K (Llano), Stock: 3.0 GHz, Overclocked To 3.627 GHz @ 1.5 V | ||||
| Motherboard | Asus F1A75-V Pro, Socket FM1, Chipset: AMD A75 | ||||
| Integrated Graphics | Integrated Radeon HD 6550D, Stock: 600 MHz, Overclocked To 960 MHz @ 1.3 V | ||||
| Discrete Graphics | Radeon HD 6670 DDR3 800 MHz GPU, 900 MHz (1800 MT/s DDR3) memory | ||||
| Networking | On-board Gigabit LAN controller | ||||
| Memory | Corsair Vengeance CMZ4GX3M2A2000C10 2 x 2 GB, Max rating: 2000 MT/s, CL 10-10-10-27-2T, Max overclock: 2184 MT/s @ CL 10-10-10-27-2T | ||||
| Hard Drive | Western Digital Caviar Black 750 GB, 7200 RPM, 32 MB Cache, SATA 3Gb/s | ||||
| Power | ePower EP-1200E10-T2 1200 W, ATX12V, EPS12V | ||||
| Software and Drivers | |||||
| Operating System | Microsoft Windows 7 x64 | ||||
| DirectX | DirectX 11 | ||||
| Graphics Drivers | Catalyst 12.7 Beta | ||||
| Benchmark Configuration | |
|---|---|
| 3D Games | |
| Battlefield 3 | Version 1.0.0.0, Operation Swordbreaker, Fraps Runs |
| Elder Scrolls V: Skyrim | Version 1.4.21.04, Fraps Runs |
| DiRT 3 | Version 1.2.0.0, Built-In Benchmark |
| StarCraft II | Version: 1.4.2.20141, Tom's Hardware Guide Benchmark |
| Synthetic Benchmarks | |
| 3DMark 11 | Version: 1.0.1.0, Benchmark Only |
| SiSoftware Sandra 2011 | Version 2011.1.17.15, CPU Test = CPU Arithmetic / MultiMedia, Memory Test = Bandwidth Benchmark |
- Sami Mäkinen Weighs In On Llano Overclocking
- Dialing In Our Overclock Using The Right Components
- Test System And Benchmarks
- Benchmark Results: Synthetics
- Benchmark Results: The Elder Scrolls V: Skyrim
- Benchmark Results: Battlefield 3
- Benchmark Results: DiRT 3
- Benchmark Results: StarCraft II
- Power And Temperature
- AMD A8-3870K: Coming Close To Radeon HD 6670
