ASUS GeForce GTX 670 DirectCU Mini OC - Compact Form Factor Without Compromises

Launch SRP: S$639

ASUS GeForce GTX 670 DirectCU Mini OC - Compact Form Factor Without Compromises

High Performance In A Compact Form Factor

The NVIDIA GeForce GTX 670 was launched about a year ago and we have seen several cards featuring a customized cooler like the Palit GeForce GTX 670 JetStream as well as variations from the reference design that provided better power delivery like the ASUS GTX 670 DirectCU II TOP card. Both cards touted higher performance levels with overclocking out of the box.

The ASUS GeForce GTX 670 DirectCU Mini OC is a compact form factor card that will fit into a mini-ITX or mATX PC chassis. With an overclocked GeForce GTX 670 GPU operating at a base clock of 926MHz and 2GB of GDDR5 video memory, this card is engineering proof of compactness without compromising on hardware requirements.

The ASUS GeForce GTX 670 DirectCU Mini OC has a 928 MHz base clock with a boost clock of 1,006MHz, but its 2GB of memory chips have not been overclocked as they are rated to operate collectively at 6,008MHz (which is the same as the memory on a reference NVIDIA GeForce GTX 670). However the main focus of the card is its diminutive nature as it measures roughly about 7 inches in length (17 centimeters) and 4.7 inches in height (12 centimeters). While the card's thickness requires it to occupy dual slots, its length is a perfect fit with even a mini-ITX motherboard. This certainly helps enthusiasts build compact mini systems for their HTPC usage that can also double-up for big-screen gaming - nifty indeed.

To illustrate, we installed the card onto an ASUS P8H77-I H77 mini-ITX motherboard to showcase its compact form factor. It's hardly any longer than the board itself and you get pretty powerful single GPU performance.

The card also boasts of the new CoolTech Fan that's touted to have a wider-angle airflow in multi-direction versus that of a traditional cooling fan that has a single-directional airflow in a narrow channel.

The new CoolTech fan that is part of the cooling system of the card. The card's GPU is in direct contact with the DirectCU Mini cooler, which features a built-in vapor chamber and thus, the cooler doesn't feature heat pipes.

We can clearly see that the DirectCU Mini cooler is very different from the usual DirectCU coolers we are accustomed with. This is due to the obvious absence of copper heat pipes for heat transfer. Instead, phase change of coolant by heat absorption is employed within the heatsink's built-in vapor chamber to speed up heat transfer from the GPU to the cooler.

The card draws power from its 8-pin Molex connector, and the card has a 5-phase VRM system that boasts of Super Alloy components for better power delivery and longer lifespans.

An 8-pin Molex graphics power connector is used instead of the usual pair of 6-pin ones. Definitely a good move to keep the physical footprint of the card compact.

 The card features ASUS' proprietary Super Alloy components for better performance and longer lifespans.

At the rear of the card, we see a DirectPower plate that covers the SAP capacitors that are located directly behind the NVIDIA GK104 graphics processor (the core used for the GTX 670).

The video connectivity options of the ASUS GeForce GTX 670 DirectCU Mini OC include one dual-link DVI-D port, one dual-link DIV-I port, one full-size DisplayPort, and a HDMI port. In essence, you get all the expected ports from a full-sized graphics card.

The display connectivity options of the card.

There are a pair of  SLI connectors that would allow you to combine up to three GeForce GTX 670 cards in a multi-GPU setup. Such a setup obviously calls for a ATX board or larger board with the corresponding PEG slots and a full tower PC chassis.

The two SLI connectors allow system builders to set up a multi-GPU configuration that can consist of up to three GeForce GTX 670 cards.

ASUS GeForce GTX 670 DirectCU Mini OC Card and competitive SKUs compared
  ASUS GeForce GTX 670 DirectCU Mini OC NVIDIA GeForce GTX 670 ASUS GTX 670 DirectCU II TOP Palit GeForce GTX 670 JetStream NVIDIA GeForce GTX 680 (Reference Card) AMD Radeon HD 7970 GHz Edition 3GB DDR5
Core Code
  • GK104
  • GK104
  • GK104
  • GK104
  • GK104
  • Tahiti XT
GPU Transistor Count
  • 3.54 billion
  • 3.54 billion
  • 3.54 billion
  • 3.54 billion
  • 3.54 billion
  • 4300 million
Manufacturing Process
  • 28nm
  • 28nm
  • 28nm
  • 28nm
  • 28nm
  • 28nm
Core Clock
  • 928MHz
  • 915MHz
  • 1059MHz
  • 1006MHz
  • 1006MHz
  • 1050MHz
Stream Processors
  • 1344 CUDA cores
  • 1344
  • 1344
  • 1344
  • 1536 CUDA cores
  • 2048 Stream processing units
Stream Processor Clock
  • 928MHz
  • 915MHz
  • 1059MHz
  • 1006MHz
  • 1006MHz
  • 1050MHz
Texture Mapping Units (TMUs)
  • 112
  • 112
  • 112
  • 112
  • 128
  • 128
Raster Operator units (ROP)
  • 32
  • 32
  • 32
  • 32
  • 32
  • 32
Memory Clock (DDR)
  • 6008MHz
  • 6008MHz
  • 6008MHz
  • 6108MHz
  • 6008MHz
  • 6000MHz DDR (GDDR5)
Memory Bus width
  • 256-bit
  • 256-bit
  • 256-bit
  • 256-bit
  • 256-bit
  • 384-bit
Memory Bandwidth
  • 192.2GB/s
  • 192.2GB/s
  • 192.2GB/s
  • 195.4GB/s
  • 192.3GB/s
  • 288GB/s
PCI Express Interface
  • PCIe v3.0 x16
  • PCI Express 3.0
  • PCI Express 3.0
  • PCI Express 3.0
  • PCIe ver 3.0 x16
  • PCIe ver 3.0 x16
Power Connectors
  • 1 x 8-pin
  • 2 x 6-pin
  • 2 x 6-pin
  • 2 x 6-pin
  • 2 x 6-pin
  • 1 x 6-pin, 1 x 8-pin
Multi GPU Technology
  • SLI
  • SLI
  • SLI
  • SLI
  • SLI
  • CrossFireX
DVI Outputs
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1 x Dual-Link
HDMI Outputs
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
DisplayPort Outputs
  • 1
  • 1
  • 1
  • 1
  • 1
  • 2 (version 1.2 HBR2)
HDCP Output Support
  • Yes
  • Yes
  • Yes
  • Yes
  • Yes
  • Yes

8.5
Performance
8
Features
9
Value
8
The Good
Compact form factor
Good all-round performance
Low fan noise
The Bad
Stock performance slightly lower than expected
Dual PEG slots required; not all mini-ITX chassis are designed for that