When only one boxer enters the ring, the battle, as a rule, is either canceled, or, provided that the athlete is not all right with his head, it turns out to be megazabal. Unfortunately, the first option happened with the GTX 780: the fighter played with muscles, shocked the champion belt and went home. Now there will be a completely different story. A year later, a double Radeon HD 7990, ready to challenge the title of the fastest video card on the planet, was released for the battle with the GTX 690.
Late?
If you now flashed the thought in the spirit of “late” or “for a whole year, could not make two -headed”, forget and do not give in to the temptation to gloat. AMD She spoke clearly on the schedule: two -chip monsters always served to maintain sales of the outgoing generation, and the hasty appearance of the GTX 690 (just a month after the launch GTX 680 ) rather an exception than the rule.
However, this does not mean that the creation of a double representative HD 7000 was easy. It is enough to look at the map at least once – and it will immediately become clear that it is to fit two top chips Tahiti In one package, it is much more complicated than a couple of average GK104 from GTX 680.
“Red” guys – the guys are hot and on HD 7970 without hesitation they squeezed 250 watts at the BP (against 195 watts at the GTX 680). In order to lay a tandem of 375 watts, AMD had to take a 30.5-cm piece of textolite, dilute the entire wiring on it and install over each GPU by a set of evaporative chamber and a massive aluminum radiator with four copper tubes. Plus, it was necessary to add three turntables of 90 mm and solder two 8-pin outlets.
Efforts did not in vain. HD 7990 – two full -fledged HD 7970 GHZ Edition Without any discounts on cohabitation. The total card has 8.3 billion transistors, 4096 stream processors, 256 texture blocks, 64 rosterization engines and 6 GB of video memory connected to two tires of 384 bits. And, most importantly, everything works at the previous speed of 1 GHz on crystals and 6 GHz in memory. For comparison, the GTX 690 has cut the frequency at one time – from 1006 to 915 MHz. The “green” has the stated numbers, however, the minimum threshold, without automatic acceleration, and the competitor has the most achievable value.
Implementation
Note that from a technical point of view, the “red” flagship is not different from similar maps of past generations. To work, he needs only one PCIe 3 connector.0, then the Crossfirex mode is turned on, organized using a special chip-bridge chip PLX. In this regard, HD 7990 managed to fit proprietary technology AMD Zerocore. In 2D mode, it turns off the second core and significantly reduces energy consumption.
Put the emphasis in the novelty and on Eyefinity 2.0. To the top card can really connect up to six monitors. To do this, only one DVI and four Mini DisplayPort were put on the input/output panel at once. The flip side of this decision: even for a two -screen configuration, you will have to run in search of adapters.
Comparison
We tested cards on the same stand and set of benchmarks as GTX 780. And to see who the implementation of Crossfirex/Sli turned out better, they borrowed the results of HD 7970 with GTX 680.
The AMD scalability task solved a little more successful than its opponent. If you directly compare the double and single versions (without overclocking, with 925 MHz on the crystal), the latter will be 39% weaker. Nvidia has much more modest, 27%, but in the battle it did not interfere with it.
In a good way, HD 7990 confidently leaded in only two tests-old Aliens vs. Predator And Unigine Heaven Benchmark 4.0. In everyone else, she either went to the foot with a competitor, or completely lagged behind. Moreover, most of all was lost in projects with support Physx , corporate physical engine NVIDIA ( Batman: Arkham City And Metro: Last Light ). And although we usually remove such games from the final calculations, this time they were left in place – the top card should pull everything in a row. Of course, HD 7990 and so it does, showing the FPS outrageous for single boards, but there are still exceptions. And this is especially unpleasant against the background of an impressive price tag.
If two years ago, testing HD 6990 and GTX 590, we complained about space 19,800 rubles, today this number has increased to the official 32,999 rubles for HD 7990 and 31,000 rubles for GTX 690. Those who are ready to pay such money, let's say that it is better to give it to Nvidia. Unlike excessively noisy HD 7990, the flagship is practically not heard in Gamblii Casino work and consumes noticeably less energy. Well, to everyone else, we offer to turn the page and carefully study the range of video cards with a much more humane price.
Table 1.
Technical characteristics
The core
AMD Radeon HD 7990
Malta (2x Tahiti XT)
AMD Radeon HD 7970
Tahiti XT
Nvidia GeForce GTX 680
GK104
Nvidia GeForce GTX 690
2x GK104
The number of transistors
AMD Radeon HD 7990
2x 4.31 billion
AMD Radeon HD 7970
4.31 billion
Nvidia GeForce GTX 680
3.54 billion
Nvidia GeForce GTX 690
2x 3.54 billion
Process process
AMD Radeon HD 7990
28 Nm
AMD Radeon HD 7970
28 Nm
Nvidia GeForce GTX 680
28 Nm
Nvidia GeForce GTX 690
28 Nm
The number of stream processors
AMD Radeon HD 7990
2x 2048 pcs.
AMD Radeon HD 7970
2048 pcs.
Nvidia GeForce GTX 680
1536 pcs.
Nvidia GeForce GTX 690
2x 1536 pcs.
The frequency of the graphic nucleus
AMD Radeon HD 7990
1000 MHz
AMD Radeon HD 7970
925 MHz
Nvidia GeForce GTX 680
1006-1058 MHz
Nvidia GeForce GTX 690
915-1019 MHz
Type, memory volume
AMD Radeon HD 7990
GDDR5, 6 GB
AMD Radeon HD 7970
GDDR5, 3 GB
Nvidia GeForce GTX 680
GDDR5, 2 GB
Nvidia GeForce GTX 690
GDRR5, 4 GB
Memory frequency
AMD Radeon HD 7990
6008 MHz
AMD Radeon HD 7970
5500 MHz
Nvidia GeForce GTX 680
6008 MHz
Nvidia GeForce GTX 690
6008 MHz
Data tire
AMD Radeon HD 7990
2x 384 bits
AMD Radeon HD 7970
384 bits
Nvidia GeForce GTX 680
256 bits
Nvidia GeForce GTX 690
2x 256 bits
The number of texture blocks
AMD Radeon HD 7990
2x 128 pcs.
AMD Radeon HD 7970
128 pcs.
Nvidia GeForce GTX 680
128 pcs.
Nvidia GeForce GTX 690
2x 128 pcs.
The length of the board
AMD Radeon HD 7990
267 mm
AMD Radeon HD 7970
279 mm
Nvidia GeForce GTX 680
254 mm
Nvidia GeForce GTX 690
280 mm
Energy consumption
AMD Radeon HD 7990
375 watts
AMD Radeon HD 7970
250 watts
Nvidia GeForce GTX 680
195 t
Nvidia GeForce GTX 690
300 watts
Interface
AMD Radeon HD 7990
PCIE 3.0 x16
AMD Radeon HD 7970
PCIE 3.0 x16
Nvidia GeForce GTX 680
PCIE 3.0 x16
Nvidia GeForce GTX 690
PCIE 3.0 x16
Price for February 2013
AMD Radeon HD 7990
32 999 rubles
AMD Radeon HD 7970
15 500 rubles
Nvidia GeForce GTX 680
31,000 rubles
Nvidia GeForce GTX 690
15 800 rubles
Table 2.
Synthetic tests
3dmark 11 (Performance)
Graphics
AMD Radeon HD 7990
16 817
AMD Radeon HD 7970
9 134
Nvidia GeForce GTX 690
16 402
Nvidia GeForce GTX 680
9 648
Physics
AMD Radeon HD 7990
5 839
AMD Radeon HD 7970
5 841
Nvidia GeForce GTX 690
6 405
Nvidia GeForce GTX 680
5 550
Score
AMD Radeon HD 7990
11 096
AMD Radeon HD 7970
7941
Nvidia GeForce GTX 690
11 294
Nvidia GeForce GTX 680
8250
%
AMD Radeon HD 7990
100%
AMD Radeon HD 7970
72%
Nvidia GeForce GTX 690
102%
Nvidia GeForce GTX 680
74%
Unigine Heaven Benchmark 3.0
Fps
AMD Radeon HD 7990
65.5
AMD Radeon HD 7970
32.2
Nvidia GeForce GTX 690
59.6
Nvidia GeForce GTX 680
35.3
Scores
AMD Radeon HD 7990
1642
AMD Radeon HD 7970
810
Nvidia GeForce GTX 690
1501
Nvidia GeForce GTX 680
890
%
AMD Radeon HD 7990
100%
AMD Radeon HD 7970
49%
Nvidia GeForce GTX 690
91%
Nvidia GeForce GTX 680
54%
Unitine Valley 1.0
Fps
AMD Radeon HD 7990
67.5
AMD Radeon HD 7970
39.5
Nvidia GeForce GTX 690
66
Nvidia GeForce GTX 680
44.2
Scores
AMD Radeon HD 7990
2823
AMD Radeon HD 7970
1652
Nvidia GeForce GTX 690
2761
Nvidia GeForce GTX 680
1501
%
AMD Radeon HD 7990
100%
AMD Radeon HD 7970
59%
Nvidia GeForce GTX 690
98%
Nvidia GeForce GTX 680
53%
Table 3.
Game tests (personnel per second)
Aliens vs. Predator (DX11)
Veryhigh, 1680×1050, AF 16X, AA 2X
AMD Radeon HD 7990
167.9
AMD Radeon HD 7970
88.7
NVDIA GeForce GTX 690
146.1
NVDIA GeForce GTX 680
87.5
Veryhigh, 1680×1050, AF 16X, AA 4X
AMD Radeon HD 7990
149.7
AMD Radeon HD 7970
77.6
NVDIA GeForce GTX 690
119.5
NVDIA GeForce GTX 680
71
Veryhigh, 1920×1080, AF 16X, AA 2X
AMD Radeon HD 7990
150
AMD Radeon HD 7970
80.7
NVDIA GeForce GTX 690
131.3
NVDIA GeForce GTX 680
78.2
Veryhigh, 1920×1080, AF 16X, AA 4X
AMD Radeon HD 7990
133.4
AMD Radeon HD 7970
70.1
NVDIA GeForce GTX 690
108
NVDIA GeForce GTX 680
63.8
%
AMD Radeon HD 7990
100%
AMD Radeon HD 7970
53%
NVDIA GeForce GTX 690
84%
NVDIA GeForce GTX 680
50%
Tomb Raider
High, 1680×1050, AF 16X, AA 4X
AMD Radeon HD 7990
58.6
AMD Radeon HD 7970
31.4
NVDIA GeForce GTX 690
58.9
NVDIA GeForce GTX 680
35.5
High, 1680×1050, AF 16X, AA 8x
AMD Radeon HD 7990
59.4
AMD Radeon HD 7970
31.3
NVDIA GeForce GTX 690
59.5
NVDIA GeForce GTX 680
35.4
High, 1920×1080, AF 16X, AA 4X
AMD Radeon HD 7990
52.1
AMD Radeon HD 7970
27.8
NVDIA GeForce GTX 690
52
NVDIA GeForce GTX 680
30.9
High, 1920×1080, AF 16X, AA 8x
AMD Radeon HD 7990
52.2
AMD Radeon HD 7970
27.7
NVDIA GeForce GTX 690
52.3
NVDIA GeForce GTX 680
31.1
%
AMD Radeon HD 7990
100%
AMD Radeon HD 7970
53%
NVDIA GeForce GTX 690
100%
NVDIA GeForce GTX 680
60%
Batman: Arkham City
Ultra, 1680×1050, AF 16X, AA 4X
AMD Radeon HD 7990
87
AMD Radeon HD 7970
48
NVDIA GeForce GTX 690
86
NVDIA GeForce GTX 680
97
Ultra, 1680×1050, AF 16X, AA 8x
AMD Radeon HD 7990
65
AMD Radeon HD 7970
32
NVDIA GeForce GTX 690
74
NVDIA GeForce GTX 680
85
Ultra, 1680×1050, AF 16X, PHYSX
AMD Radeon HD 7990
28
AMD Radeon HD 7970
27
NVDIA GeForce GTX 690
50
NVDIA GeForce GTX 680
53
Ultra, 1920×1080, AF 16X, AA 4X
AMD Radeon HD 7990
77
AMD Radeon HD 7970
44
NVDIA GeForce GTX 690
77
NVDIA GeForce GTX 680
94
Ultra, 1920×1080, AF 16X, AA 8x
AMD Radeon HD 7990
58
AMD Radeon HD 7970
28
NVDIA GeForce GTX 690
64
NVDIA GeForce GTX 680
81
Ultra, 1920×1080, AF 16X, PHYSX
AMD Radeon HD 7990
28
AMD Radeon HD 7970
27
NVDIA GeForce GTX 690
50
NVDIA GeForce GTX 680
53
%
AMD Radeon HD 7990
100%
AMD Radeon HD 7970
60%
NVDIA GeForce GTX 690
117%
NVDIA GeForce GTX 680
135%
Hitman: Absolution
High, 1680×1050, AF 16X, AA 4X
AMD Radeon HD 7990
46.9
AMD Radeon HD 7970
47.6
NVDIA GeForce GTX 690
48.8
NVDIA GeForce GTX 680
46.2
High, 1680×1050, AF 16X, AA 8x
AMD Radeon HD 7990
45.98
AMD Radeon HD 7970
39.2
NVDIA GeForce GTX 690
47.5
NVDIA GeForce GTX 680
36.6
High, 1920×1080, AF 16X, AA 4X
AMD Radeon HD 7990
44.9
AMD Radeon HD 7970
44.5
NVDIA GeForce GTX 690
47.4
NVDIA GeForce GTX 680
43.7
High, 1920×1080, AF 16X, AA 8x
AMD Radeon HD 7990
44.4
AMD Radeon HD 7970
36
NVDIA GeForce GTX 690
45.7
NVDIA GeForce GTX 680
32.3
%
AMD Radeon HD 7990
100%
AMD Radeon HD 7970
0%
NVDIA GeForce GTX 690
104%
NVDIA GeForce GTX 680
87%
Bioshock Infinite
Ultra, 1680×1050, AF 16X, AA 4X
AMD Radeon HD 7990
102.4
AMD Radeon HD 7970
47.6
NVDIA GeForce GTX 690
112.4
NVDIA GeForce GTX 680
81.8
Ultra, 1680×1050, AF 16X, AA 8x
AMD Radeon HD 7990
103.8
AMD Radeon HD 7970
39.2
NVDIA GeForce GTX 690
111.8
NVDIA GeForce GTX 680
81.7
Ultra, 1920×1080, AF 16X, AA 4X
AMD Radeon HD 7990
95.7
AMD Radeon HD 7970
44.5
NVDIA GeForce GTX 690
104.5
NVDIA GeForce GTX 680
73.8
Ultra, 1920×1080, AF 16X, AA 8x
AMD Radeon HD 7990
95.6
AMD Radeon HD 7970
36
NVDIA GeForce GTX 690
103.6
NVDIA GeForce GTX 680
73.4
%
AMD Radeon HD 7990
100%
AMD Radeon HD 7970
42%
NVDIA GeForce GTX 690
109%
NVDIA GeForce GTX 680
78%
Crysis 3
Max, 1680×1050, AF 16X, AA 4X
AMD Radeon HD 7990
48.9
AMD Radeon HD 7970
34.3
NVDIA GeForce GTX 690
48.2
NVDIA GeForce GTX 680
40.7
Max, 1680×1050, AF 16X, AA 8x
AMD Radeon HD 7990
43.5
AMD Radeon HD 7970
26.3
NVDIA GeForce GTX 690
40.9
NVDIA GeForce GTX 680
34.3
Max, 1920×1080, AF 16X, AA 4X
AMD Radeon HD 7990
45.9
AMD Radeon HD 7970
31.4
NVDIA GeForce GTX 690
49.9
NVDIA GeForce GTX 680
37.4
Max, 1920×1080, AF 16X, AA 8x
AMD Radeon HD 7990
41.3
AMD Radeon HD 7970
23.6
NVDIA GeForce GTX 690
40.6
NVDIA GeForce GTX 680
30.7
%
AMD Radeon HD 7990
100%
AMD Radeon HD 7970
64%
NVDIA GeForce GTX 690
100%
NVDIA GeForce GTX 680
80%
Metro: Last Light
Veryhigh, 1680×1050, AF 16X
AMD Radeon HD 7990
45
AMD Radeon HD 7970
31
NVDIA GeForce GTX 690
47.3
NVDIA GeForce GTX 680
37
Veryhigh, 1680×1050, AF 16X, ADV. Physx
AMD Radeon HD 7990
26
AMD Radeon HD 7970
19
NVDIA GeForce GTX 690
42.3
NVDIA GeForce GTX 680
33
Veryhight, 1920×1080, AF 16X
AMD Radeon HD 7990
42
AMD Radeon HD 7970
28
NVDIA GeForce GTX 690
42.7
NVDIA GeForce GTX 680
33
Veryhigh, 1920×1080, AF 16X, AdV. Physx
AMD Radeon HD 7990
23
AMD Radeon HD 7970
18
NVDIA GeForce GTX 690
38
NVDIA GeForce GTX 680
29
%
AMD Radeon HD 7990
100%
AMD Radeon HD 7970
71%
NVDIA GeForce GTX 690
125%
NVDIA GeForce GTX 680
97%
Table 4.
Price/performance ratio
Performance
AMD Radeon HD 7990
100%
AMD Radeon HD 7970
61%
NVDIA GeForce GTX 690
103%
NVDIA GeForce GTX 680
77%
Price
AMD Radeon HD 7990
100%
AMD Radeon HD 7970
47%
NVDIA GeForce GTX 690
94%
NVDIA GeForce GTX 680
48%