Technical Data / Specifications
With the EVGA GeForce GTX 660 Ti FTW Signature 2 you get a factory overclocked
card with a custom PCB cooled by a Signature 2 dual fan cooler. The ASIC quality
measured on our sample was 86.2 % which is very high considering an average of
73 % on the cards we had in our hands.
About ASIC quality:
Looking at the clock speeds we see that the GPU runs at 1'046 MHz with a
typical boost of 1'124 MHz, 144 MHz higher than the reference model. There are only
two cards that feature higher
clocks you can find in Europe. If you'd like to find them, check out our
market overview:
the DirectCU II Top from ASUS and the AMP! Extreme from Zotac. Like most other manufacturers no factory overclocking has been made on
the GDDR5 memory, therefore the clocks remain at 1'500 MHz (6'000 MHz effective) following nVidia's recommendations.
nVidia GeForce |
ASUS GTX 660 Ti DCU II Top |
EVGA GTX 660 Ti FTW S2 |
nVidia GF GTX 660 Ti |
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 |
1'046 MHz |
915 MHz |
GPU Boost
clock |
1'137 MHz |
1'124 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 |
192 Bit |
192 Bit |
192 Bit |
Memory
bandwidth |
144'200 MB/s |
144'200 MB/s |
144'200 MB/s |
TMUs |
112 |
112 |
112 |
Shader Cores |
1'344 (7 SMX) |
1'344 (7 SMX) |
1'344 (7 SMX) |
ROPs |
24 ROP |
24 ROP |
24 ROP |
Maximum board power |
XXX Watt |
150 Watt |
150 Watt |
PCB Type |
Custom Design |
Custom Design |
Reference Design |
Size (PCB - Total) |
23.1 - 27.0 cm |
25.5 - 26.2 cm |
XX.x - XX.x cm |
Cooler |
DirectCU II |
Signature 2 |
Reference Design |
MSRP |
$XXX |
$319 |
$299 |
As mentioned previously, this card from EVGA makes use of a
custom PCB. But this PCB isn't unfamiliar, if you take a closer look you see
that it's the GTX 680's reference PCB. Of course some minor changes have been
made by EVGA's engineer team but you clearly see the ressemblance when comparing
the PCBs one next to each other like on the picture below. Therefore you get
an analog power design with six phases, where the GPU gets four phases and the memory gets
two phase.
The voltage regulation chip used for the GPU here is a NCP5392P from ON
Semiconductor. A bit different from the RT8802A (Richtek Technology) you find on
the GTX 680 reference. On the memory power design side you find a chip labeled
D7=ED SOZ.
This FTW card is available with two different coolers. There is also
one
with a blower type cooler close to the reference one. The one we are reviewing
here is the dual fan version. The cooler consists of a nickel-plated two-section
heatsink with a plastic shield and two 80 millimeter fans. The base as well as
the four 8mm heatpipes are made from nickel-plated copper. The rest of the
heatsink is made of nickel plated aluminium for a very neat look.
For those who care the two fans carry the part number PLA08015S12HH.
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).
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