To fill the huge performance gap between the GTX 650 Ti and the GTX 660 and also to compete with AMDs new Radeon HD 7790, nVidia released the GTX 650 Ti Boost. Behind this strange name there's a GTX 660 hiding whereas one SMX unit has been disabled. Therefore this graphics card is powered by a GK106 with 768 Cuda cores working at 980 MHz with a typical boost of 1'033 MHz. Regarding the memory we have 2 GB of GDDR5 working at 1'500 MHz on a 192 Bit bus. Performance wise the GTX 650 Ti Boost is also a direct competitor of AMD's Radeon HD 7850.
You might be expecting this, with the nVidia GeForce GTX 650 Ti Boost you get a reference card with
reference clocks, a reference PCB and a reference cooler. The ASIC quality
measured on our sample was 71.6 %.
About ASIC quality:
Looking at clock speeds we see the GTX 650 Ti Boost is sharing the same
frequencies as its great sister the GTX 660. Therefore the GPU runs at 980 MHz with a
typical boost of 1'033 MHz and the GDDR5 memory is clocked at 1'500 MHz (6'000 MHz effective).
The card also features nVidia's Boost 2.0 technology. In our case when the GPU
temperature was below 50°C the card was clocking itself up to 1'084 MHz. Above
50°C the GPU clock went down to 1'071 MHz and above 70°C to 1'058 MHz.
nVidia GeForce
GTX 660
GTX 650 Ti Boost
GTX 650 Ti
GTX 650
Chip
GK106
GK106
GK106
GK107
Process
28 nm
28 nm
28 nm
28 nm
Transistors
2.54 Billion
2.54 billion
2.54 Billion
1.30 Billion
GPU
clock
980 MHz
980 MHz
925 MHz
1'058 MHz
GPU Boost
clock
1'033 MHz
1'033 MHz
N/A
N/A
Memory
2'048 MB GDDR5
2'048 MB GDDR5
2'048/1'024 MB GDDR5
1'024 MB GDDR5
Memory
clock
1'500 MHz (6'000 MHz)
1'500 MHz (6'000 MHz)
1'350 MHz (5'400 MHz)
1'250 MHz (5'000 MHz)
Memory
interface
192 Bit
192 Bit
128 Bit
128 Bit
Memory
bandwidth
144'200 MB/s
144'200 MB/s
86'400 MB/s
80'000 MB/s
TMUs
80
64
64
32
Shader Cores
960 (5 SMX)
768 (4 SMX)
768 (4 SMX)
384 (2 SMX)
ROPs
24 ROP
16 ROP
16 ROP
16 ROP
Maximum board power
140 Watt
140 Watt
110 Watt
64 Watt
PCB Type
Reference Design
Reference Design
Reference Design
Reference Design
PCB size
short
short
PCIe16x
PCIe16x
Cooler
Reference Design
Reference Design
Reference Design
Reference Design
MSRP
$229
$169
$149
$109
Something else this GTX 650 Ti Boost shares with the GTX 660 is the PCB. When you take a closer look at the PCB you see that it's
identical. Therefore you get
an analogue power design with five phases, where the GPU gets four phases and the
memory gets one phase.
The voltage regulation chip used for the GPU power stage is a NCP5395G from ON
Semiconductor. On the memory power stage you find an APL1117 from ANPEC.
This graphics card even features the same cooler you find on the GTX 660
reference cards. It comes with an aluminium fin stack and a copper base. The whole thing is
cooled by a radial/blower-type fan.
The memory chips used are made by Samsung and carry the model number
K4G20325FD-FC03. They are specified to run at 1'500 MHz (6'000 MHz effective).
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
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
nVidia GeForce GTX 650 Ti
28.23
91.68
3.08
AMD Radeon HD 6850
26.06
90.96
2.86
AMD Radeon HD 7870
48.53
170.90
2.84
AMD Radeon HD 6870
31.34
112.21
2.79
nVidia GeForce GTX 660
44.81
167.94
2.67
AMD Radeon HD 7850 2GB
40.62
154.75
2.62
nVidia GeForce GTX 560 Ti 448C
40.08
153.27
2.61
nVidia GeForce GTX 660 Ti
52.95
220.99
2.40
AMD Radeon HD 7790
31.04
130.14
2.39
nVidia GeForce GTX 650 Ti Boost 2GB
39.16
169.00 (MSRP)
2.32
AMD Radeon HD 5870
35.40
160.64
2.20
AMD Radeon HD 5850
29.35
141.53
2.07
nVidia GeForce GTX 460
25.70
124.06
2.07
nVidia GeForce GTX 470
32.48
198.07
1.64
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.
The GTX 650 Ti Boost is really what nVidia and
it's customers needed the most: A sub-200-Euro/sub-200-CHF card that offers great performance. But
unfortunately it arrives on the market a bit too late. The MSRP is looking
very good when you check at other cards' MSRP but when you look at the
market prices it's completely different. The GTX 650 Ti Boost goes
retail today priced at 169 € when you can find custom versions of the HD
7870 and HD 7850 - more performance - starting at 170 € and 154 €
respectively with Bioshock Infinite and the latest Tomb Raider
bundled.
- SLI Support
- Audible
in idle
- Bit too loud under load
- Price
Performance
+
-
Performance is on a good level but as we've
already mentioned, it is not enough if you put the price into the
equation too. On
average the HD 7850 2GB is 5.6 percent faster and the HD 7870 is 27
percent faster.
You can even find the GTX 660 which is 15 percent faster for 170 Euro
these days.
When it comes to the cooler, nVidia equips its card with the exact same
cooler you find on the GTX 670/660 reference. It's an adequate cooler for a card
in this performance segment but it's not perfect. While temperatures were
on a good level the noise wasn't. In idle the fan doesn't go below 30 %
fan speed. At this speed the card is silent but audible. Under load the
noise was a bit too high too. It was as noisy as the reference GTX
670/660 Ti, which are cards that play in another league.
The power consumption in idle is really good. Our entire setup wasn't
drawing more than 51 Watts, which is remarkable. Under load we measured 184 Watts which is
quite high if you consider non reference cards. Both
our non reference HD 7870 and GTX 660 were more efficient for exemple.
- Performance">- Performance
- Power Consumption in idle
- Power Consumption under load
Recommendation
+
-
It's hard to recommend this card at this time. We
will update this point when the card will actually be available on the
market and see how the price has been ajusted.