ZOTAC GTX 680
NVIDIA announced its flagship single-Kepler GPU
based graphics card in the new GTX 600 serie. It offers great performance at
significantly reduced power consumption.Based on 28-nm TSMC manufacturing process the ZOTAC GTX 680 is clocked at 1006 MHz and house 3.54 billion transistors on the GPU. NVIDIA's dynamic overclocking
algorithm works well and provides a nice speed boost for the card. , Nvidia
have managed to cut down on the power requirement of Kepler, while keeping the
costs to the lowest possible levels. Speed and efficiency were the main goals
here and they’ve hit those targets spot on.
The GeForce GTX 680 is not at all an underpowered, but it's
clear that, had it wanted, nVidia could have unveiled a product that packed more
power.Notably, the GeForce GTX 680 must make do with a 256-bit memory
interface at a time when its AMD rival (and, indeed, its own predecessor, the
580) stretches to 384-bit.
Specifications
Shader Units: 1536
ROPs: 32
Graphiocs Processor:
GK104
Transistors: 3500M
Memory Size: 2048 MB
Memory Bus Width:
256Bit
Core Clock: 1006 MHz+
Memory Clock: 1058 MHz
Bus Interface: PCI Express 3.0;
Display ports: 2x DVI; 1x HDMI , 1x Display Port
Design and Build
ZOTAC GTX 680 seem to have one of the best avilable in the market. Not only has NVIDIA retaken the performance crown with the GeForce GTX
680, but they have done so in a manner truly befitting of their drive
for efficiency.The card is packaged in an good looking box, which
highlights all the features of the card. The bundle, includes two Molex to
6-pin power connectors, DVI to VGA adapter, driver disk, installation manual
and the best part is the Assassin’s Creed 3-game pack, which includes
Assassin’s Creed, Assassin’s Creed II and Assassin’s Creed: Revelations. ZOTAC
seems to be one of the only board manufacturers that continue to bundle free
games with their cards and has continued with the GTX
680.
Features
GTX 680 features a fully enabled GK104 GPU – unlike the first generation
of Fermi products there are no shenanigans with disabled units here.
This means GTX 680 has 1536 CUDA cores, a massive increase from GTX 580
(512) and GTX 560 Ti (384). There are some New features like GPU Boost, Adaptive V-Sync and
some new Anti-Aliasing (AA) models. NVIDIA engineers completely reworked the
memory subsystem for Kepler, enabling much higher memory clock speeds compared
to prior GeForce GPUs. As a result of this effort, GeForce GTX 680 achieves
memory speeds up to 6Gbps, the highest speed of any GPU in the industry. GPU
Boost is similar to Turbo Boost, in the sense; the card will dynamically
increase the clock speeds and voltages in a game, only if, it does not go
beyond the set TDP. This keeps changing as you play the game and is built into
Kepler itself, so it kicks in by default. Adaptive V-Sync can now be found in
the Nvidia Control Panel and what it does is, dynamically toggle the V-Sync
state depending on the frame rate. The two new AA modes (FXAA and TXAA) are
said to offer similar quality levels as MSAA, but without the huge performance
hit.
Performance
The Zotac GeForce GTX 680 is a good
product.The performance scores skew in favour of ZOTAC GeForce GTX 680.Despite
the card not having a vapor chamber, like the GTX 580, the GTX 680 is just as
silent as its predecessor. Nvidia have used a normal aluminium heatsink
and copper heat pipes for the cooling, in order to keep costs down and it works
like a charm. In only one game title, BattleForge, was it a fraction of a frame
behind the 7970, recording 68.0fps at a resolution of 1920x1200 against 68.2
for the 7970. However, in the 1680 x 1050 and 2560 x 1600 resolutions, it
finished slightly ahead of the 7970, recording 80.2 and 47.7fps respectively, against
80.1 and 47.4fps for the 7970.In all the other games the GeForce
GTX 680 won decisively.The card is whisper quiet on full
load as well with the fan speed set to ‘Auto’. Temperatures are not too bad,
either. The card idles at around 45 degrees Celsius and with FurMark running,
it went to a maximum of 77 degrees Celsius. Not bad at all for a non-vapor
chamber cooler.
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