EVGA GeForce GTX 760 SuperClocked w/ ACX Review

Published by Marc Büchel on 25.06.13
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Technical Data / Specifications


With the EVGA GeForce GTX 760 SuperClocked ACX you get a card which features a custom PCB as well as a custom cooler. The ASIC quality measured on our sample was 79.9 % which is high considering the average being at 73 % on the cards we had at hands.
About ASIC quality:



EVGA's GeForce GTX 760 SuperClocked ACX is based on NVIDIA's Kepler GK104-225 A2 chip, which is manufactured by TSMC using the latest 28 nanometer process technology. With the GeForce GTX 760 you get six SMX units which results in 1'152 CUDA cores. Following the specs further, there are 96 TMUs, 32 ROPs, a 256 bit wide memory interface and 2 Gigabyte of GDDR5 memory, which is clocked at 1'502 MHz (effective 6'008 MHz). In the end there is a memory bandwidth of 192 Gigabyte per second. Concerning the GPU's clock speeds it runs at a base clock of 1072 MHz and a boost clock of 1137 MHz. During our tests the highest boost clock we measured was 1'215 MHz and the average boost clock was also 1'215 MHz.

The EVGA GeForce GTX 760 SuperClocked ACX also supports GPU Boost 2.0. The first version of GPU Boost stopped overclocking the GPU when a certain power target was hit. This new second version of GPU Boost stops overclocking the card, when a certain temperature is being reached. This makes sense since the temperature is the bigger inhibitor than the power target in most cases. In this case the temperature target is 80 degrees Celsius. In other words, as long as the GPU runs at less than 80°C it will keep overclocking until the maximum frequency has been reached. This is why in our case the average boost clock was 182 MHz higher than the typical boost clock NVIDIA advertises.



nVidia GeForce

GeForce GTX 770

EVGA GTX 760 SC ACX

GeForce GTX 760

GeForce GTX 670

Chip GK104-425-A2 GK104-225-A2 GK104-blah GK104
Process 28 nm 28 nm 28 nm 28 nm
Transistors 3.54 billion 3.54 billion 3.54 billion 3.54 billion
GPU clock 1'046 MHz 1'072 MHz 980 MHz 915 MHz
GPU Boost clock 1'085 MHz 1'137 MHz 1'033 MHz 980 MHz
Memory 2'048 MB GDDR5 2'048 MB GDDR5 2'048 MB GDDR5 2'048 MB GDDR5
Memory clock 1'750 MHz (7'000 MHz) 1'502 MHz (6'008 MHz) 1'502 MHz (6'008 MHz) 1'502 MHz (6'008 MHz)
Memory interface 256 Bit 256 Bit 256 Bit 256 Bit
Memory bandwidth 224'400 MB/s 192'300 MB/s 192'300 MB/s 192'300 MB/s
TMUs 128 96 96 112
Shader Cores 1'536 (8 SMX) 1'152 (6 SMX) 1'152 (6 SMX) 1'344 (7 SMX)
ROPs 32 32 32 32
Maximum board power 230 Watt XXX Watt 170 Watt 170 Watt
PCB Type Reference Design Custom Design Reference Design Reference Design
Lenght (PCB - Total) 26.7 - 26.7 cm 24.3 - 24.3 cm 17.5 - 24.1 cm 17.5 - 24.1 cm
Height (PCB - Total) 11.0 - 11.0 cm 11.0 - 11.0 cm 11.0 - 11.0 cm 11.0 - 11.0 cm
Slots 2 2 2 2
Cooler NVIDIA Reference EVGA ACX NVIDIA Reference NVIDIA Reference
MSRP $399 $259 $249 $199




EVGA decided to equip the GeForce GTX 760 SuperClocked ACX with their latest and greatest ACX cooler. In case of this card you get three copper heatpipes that have not been nickel plated. Two of them have a diameter of eight millimeter while the last one has a standard size of six millimeter. Soldered to the heatpipes you find the fin stack which is being provided with fresh air via two fans and these fans measuer 87 millimeter in diameter. EVGA is very proud of the fact, that they use fans that feature excellent build quality. Another reasonable addition is, that this custom cooler establishes direct contact with the MOSFET's thank to thermal pads. Overall this cooler seems to be better than EVGA's old Signature 2.
As the ACX cooler is longer than the 17.5cm of the reference PCB, EVGA decided to extend the PCB to the size of the cooler. In the end the PCB is 6.8 cm longer than the reference one but the card's total lenght is the same. On this PCB extension EVGA deported the memory power design you usually find below the GPU power design on the reference card. This way they free some space for an additional phase to the GPU power design. The rest of the PCB extension is empty and covered by some kind of cooling plate which doesn't cool anything but the ground (GND)?



A closer look at the PCB shows that EVGA equipped this card with an analog seven phase power design. The GPU gets its current from five phases and the two phases left take good care of the memory. NVIDIA's reference design features four plus two phases.  

Checking the voltage regulation chip we find a RT8802A Multi-Phase PWM controller from Richtek, which is the same model that can be found on the GTX 680 for exemple. The reference card from NVIDIA makes use of a NCP5392P from ON Semiconductor.
Furthermore there is an unidentified Richtek 2-phase PWM labelled 08 FC 80R taking care of a stable current supply for the the memory which I guess it's the same kind or the same as on the reference designed card.
There is also an INA3221 Triple-Channel voltage monitor from Texas Instruments. You also finder the later on the reference card.



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).




Page 1 - Introduction Page 13 - DIRT Showdown
Page 2 - Technical Data / Specifications Page 14 - Far Cry 3
Page 3 - Preview & Delivery Page 15 - Max Payne 3
Page 4 - Test Setup Page 16 - Sleeping Dogs
Page 5 - 3DMark 11 Page 17 - The Elder Scrolls V: Skyrim
Page 6 - 3DMark Fire Strike Page 18 - Metro: Last Light
Page 7 - Unigine Heaven 4.0 Page 19 - Power Consumption
Page 8 - BattleField 3 Page 20 - Fan Speed / Noise Level
Page 9 - Borderlands 2 Page 21 - Temps - Idle / FurMark / BF3
Page 10 - Bioshock Infinite Page 22 - Performance/Price & Performance/Watt
Page 11 - Crysis 3 Page 23 - Conclusion
Page 12 - Call of Duty Black Ops 2



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