These day everybody wants to build a small form factor gaming rig. Since, the BitFenix Prodigy case came along we're all crazy about these setups. When you actually start hunting for components for such a setup you find miniITX boards, nice cooler, obviously nice cases but when it comes to a gaming VGA, they are all way too long and disproportionate for miniITX boards. With the GTX 670 DirectCU Mini ASUS squeezed a fully fledged GTX 670 onto a PCB which is as short as a miniITX board but still the card offers a great cooler and good performance.
With the ASUS GTX 670 DirectCU Mini OC you get a factory overclocked
card with a super short custom PCB cooled by ASUS' brand new DirectCU Mini
cooler. The ASIC quality
measured on our sample was 78.7 % which is very high considering an average of
73 % on the cards we had in our hands. Furthremore we noticed an ASIC quality of
74.3 % on ASUS fully fledged DirectCU II Top graphics card.
About ASIC quality:
Looking at the clock speeds we see that the GPU runs at 928 MHz with a
typical boost of 1'006 MHz, 26 MHz higher than the reference model. There
are actually quite a few cards available that offer higher clocks speeds. You
can find all those models in our
market overview. Like most other manufacturers,
ASUS decided to do no factory overclocking on
the GDDR5 memory, therefore the clocks remain at 1'500 MHz (6'000 MHz effective) following nVidia's recommendations.
nVidia GeForce
ASUS GTX 670 DCU II Top
ASUS GTX 670 DC Mini OC
nVidia GF GTX 670
Chip
GK104
GK104
GK104
Process
28 nm
28 nm
28 nm
Transistors
3.54 Billion
3.54 billion
3.54 billion
GPU
clock
1'059 MHz
928 MHz
915 MHz
GPU Boost
clock
1'137 MHz
1'006 MHz
980 MHz
Memory
2'048 MB GDDR5
2'048 MB GDDR5
2'048 MB GDDR5
Memory
clock
1'500 MHz (6'000 MHz)
1'500 MHz (6'000 MHz)
1'500 MHz (6'000 MHz)
Memory
interface
256 Bit
256 Bit
256 Bit
Memory
bandwidth
192'300 MB/s
192'300 MB/s
192'300 MB/s
TMUs
112
112
112
Shader Cores
1'344 (7 SMX)
1'344 (7 SMX)
1'344 (7 SMX)
ROPs
32 ROP
32 ROP
32 ROP
Maximum board power
XXX Watt
XXX Watt
170 Watt
PCB Type
Custom Design
Custom Design
Reference Design
Lenght (PCB - Total)
23.2 - 26.8 cm
17.0 - 17.0 cm
17.3 - 24.13 cm
Cooler
DirectCU II
DirectCU Mini
Reference Design
MSRP
$XXX
$XXX
$399
As mentioned previously, this card from ASUS makes use of an ultra short custom PCB.
ASUS designed this card with miniITX gaming builds in mind. Since miniITX boards
measure 17cm x 17cm, the target was to come up with a GTX 670 that measures the
same lengthwise. Cramming all the components on the PCB is one part of the
story, but the other is that the cooler had to be significantly smaller then
usual. Therefore ASUS had to come up with cooler that is even more efficient in
removing heat than their well known DirectCU II model. Most of the changes went
into the fan design. ASUS created a combination of an axial and a radial fan
which accounts for higher air pressure at equal noise level. In the end there is
also more air moving over the fins, which means that it was possible for ASUS to
achieve sufficient cooling for this 170 Watts TDP card.
Taking a closer look at the power design shows that there is a total of five
phases, whereas ASUS makes use of a analog power design that features super
alloy components. According to ASUS their so called "Direct Power" power design
helps in reducing PCB temperature by 17 percent. The manufacturer decided to
provide the GPU with four and the memory with one phase, which is basically
enough for a GTX 670 if you don't want to break overclocking world records with
this card. Last but not least there is another thing that is interesting about
the power design of this card. ASUS provided the GTX 670 DirectCU Mini with one
8-Pin power connector instead of two 6-Pin plugs.
When checking the power regulation chips we find, that ASUS is using a
Richtek RT8802A regarding the GPU and an APW7165A from Anpec regarding the
memory.
The memory chips used are made by Hynix and carry the model number
H5GQ2H24AFR-R0C. They are specified to run at 1'500 MHz (6'000 MHz effective).
The card ships well bolstered in a foam made mold.
Bundled with the graphics card there is an user guide, some other
documentation, a driver CD that
includes the overclocking tool too and a power adaptor (2x PCIe-6pin to 1x
PCIe-8pin). Apart from that there is nothing else but the card in the box.
Overall we would have loved to see like one game in the bundle or at least DVI
to VGA adapters. Like it's lying here on the table the bundle is really basic
and there is just absolutely nothing special about it.
Idle, temperature is
taken after 15 minutes @ 30 %, 50 % and 100 % fan speed.
Room Temperature: 25°C
Temperature under Furmark
For FurMark, temperature is taken
after 15 minutes of GPU Burn test @ 30 %, 50 % and 100 % fan speed.
We stopped the test when the GPU temperature hit 90°C.
Room Temperature: 25°C
Temperature and fan speed under BattleField 3
For BattleField 3, temperature and fan speed values
taken, are the
highest achieved
after 1 hour gaming @ auto fan speed.
nVidia GeForce GTX 650 Ti Boost SLI
(ref + non ref design)
72.35
286
2.53
AMD Radeon HD 7850 (non ref design)
40.62
166
2.45
nVidia GeForce GTX 660 Ti SLI (non ref design)
88.26
363
2.43
nVidia GeForce GTX 650 Ti (non ref
design)
28.23
130
2.17
nVidia GeForce GTX 650 Ti Boost
39.16
184
2.13
AMD Radeon HD 5870
35.40
193
1.83
AMD Radeon HD 6870
31.34
175
1.79
AMD Radeon HD 5850
29.35
170
1.73
AMD Radeon HD 6850 (non ref design)
26.06
161
1.62
nVidia GeForce GTX 560 Ti 448C (non
ref design)
40.08
250
1.60
nVidia GeForce GTX 470
32.48
247
1.32
nVidia GeForce GTX 460 (non ref
design)
25.70
199
1.29
*Entire system
More is better
Less is better
More is better
The "Performance Index" value is calculated as the sum of all
benchmarks results divided by the amount of games (3DMark and Ungine not
included into the calculation).
Performance/Price
Graphics Cards
Performance Index
Price
(€)
Performance/€*10
AMD Radeon HD 6870
31.34
99
3.17
AMD Radeon HD 7870
48.53
169
2.87
nVidia GeForce GTX 660
44.81
159
2.82
nVidia GeForce GTX 650 Ti Boost 2GB
39.16
140
2.80
AMD Radeon HD 6850
26.06
94
2.77
AMD Radeon HD 7790
31.04
112
2.77
AMD Radeon HD 7850 2GB
40.62
151
2.69
AMD Radeon HD 7790 CrossFire
59.95
224
2.68
nVidia GeForce GTX 650 Ti Boost SLI
72.35
280
2.58
nVidia GeForce GTX 650 Ti 2GB
28.23
120
2.35
nVidia GeForce GTX 660 Ti
52.95
233
2.27
AMD Radeon HD 5870
35.40
162
2.19
AMD Radeon HD 5850
29.35
142
2.07
nVidia GeForce GTX 460
25.70
133
1.93
nVidia GeForce GTX 670
59.96
312
1.92
nVidia GeForce GTX 660 Ti SLI
88.26
466
1.89
nVidia GeForce GTX 680
64.15
380
1.69
ASUS GeForce GTX 670 DC2 Top
64.76
394
1.64
nVidia GeForce GTX 470
32.48
199
1.63
ASUS GeForce GTX 670 DC Mini OC
60.46
391
1.55
More is better
Less is better
More is better
For the price we took the lowest price available on geizhals.eu,
on the day the review has been published.
ASUS has created quite an interesting little piece
of hardware with this DirectCU Mini graphics card. MiniITX are quite
famous these days and more and more build logs of compact gaming PC's
are emerging these days in hardware forums all around a globe. Therefore
it make perfect sense that ASUS makes sure to deliver appropriate
hardware for this niche. It's a fact, that graphics cards are the main
reason why miniITX gaming PC's can't get anymore compact these days.
Overall ASUS did a great job with their ultra compact GTX 670 DirectCU
Mini. The small cooler is able to cope with the heat generated by the
GK104 GPU but to be realistic we have to say, that it is a bit noisier
than what we're used to from ASUS' DirectCU coolers. What we really
think should be improved this card is being shipped with. ASUS could at
least inclued one game code or maybe some cool, fancy accessories, like
for example the door hangers you get with ROG boards these days.
- Design
- Bundle
- Price
Cooling / Noise
Level
+
-
GPU Temperatures were good with a maximum of 83°C under heavy
FurMark load with the fans locked at 30 % fan speed. The noise levels
are good too at 30 % (almost noiseless) and 50 % (Silent but audible) fan speed but at full
speed the DirectCU Mini cooler is quite loud.
Anyway unless you have tropical ambient temperature the fans won't go
that high. After one hour gaming BattleField 3 the maximum fan speed
measured was 49 % and GPU temperature 74°C. So in the end the DirectCU
Mini cooler does a really good job for its size although it's obviously
behind than ASUS'
fully fledged DirectCU
II.
Performance
+
-
Despite the fact, that this card comes with a
factory overclocking, it's not faster than our reference GTX 670. This
is the case because our reference GTX 670 has a typical boost clock of
1'084 MHz which is only a tiny bit less then what the GTX 670 DirectCU
Mini OC from ASUS offers (1'110 MHz). That's why there is almost no
measurable difference between these two cards.
While taking a closer look at power consumption we noticed, that idle
power consumption is very good compared to the reference card. The
DirectCU Mini needs five Watt less than the reference model. To our
surprise power consumption unter load was just the opposite. This little
card was burning 16 Watt more than the fully grown DirectCU II Top card
from ASUS!
- Power Consumption in idle
- Power Consumption under load
Recommendation
+
-
If you should be looking for a graphics card for an
ultra compact gaming PC, then this card is perfectly suitable and is
also the only one of its kind. On the
other hand, checking the price reveals that this GTX 670 DirectCU Mini
OC is listed for no
less than 391 Euro on Geizhals.eu. Considering that the cheapest GTX 670
costs about 312 Euros these days, you have to pay quite a few buck extra
to get a smaller PCB.
- MiniITX gaming setup
We gave the
ASUS GTX 670 DirectCU Mini a solid 4 out of 5 stars.