Introduction

Announced at the same time as the higher-performing Nvidia GeForce RTX 3080 Ti, less attention was focused on the RTX 3070 Ti. Retailing at $599/£529 – but good luck in finding any cards at that price – this model improves upon its non-Ti namesake in a couple of noteworthy ways, illustrated in the table below.


































Ampere and Turing Compared

 

RTX 3090

RTX 3080 Ti

RTX 3080

RTX 3070 Ti

RTX 3070

RTX 2080 Ti

RTX 2080

RTX 2070 Super

Launch date

Sep 2020

June 2021

Sep 2020

June 2021

Oct 2020

Sep 2018

Sep 2018

July 2019

Codename

GA102

GA102

GA102

GA104

GA104

TU102

TU104

TU104

Architecture

Ampere

Ampere

Ampere

Ampere

Ampere

Turing

Turing

Turing

Process (nm)

8

8

8

8

8

12

12

12

Transistors (bn)

28.3

28.3

28.3

17.4

17.4

18.6

13.6

13.6

Die Size (mm²)

628.4

628.4

628.4

392.5

392.5

754

545

545

PCIe

4.0

4.0

4.0

4.0

4.0

3.0

3.0

3.0

Base Clock (MHz)

1,400

1,365

1,440

1,580

1,500

1,350

1,515

1,605

Boost Clock (MHz)

1,695

1,665

1,710

1,770

1,725

1,545

1,710

1,770

Founders Edition Clock (MHz)

1,695

1,665

1,710

1,770

1,725

1,635

1,800

1,770

Shaders

10,496

10,240

8,704

6,144

5,888

4,352

2,944

2,560

GFLOPS

35,581

34,099

29,768

21,750

20,314

13,448

10,068

9,062

Founders Edition GFLOPS

35,581

34,099

29,768

21,750

20,314

14,231

10,598

9,062

Tensor Cores

328

320

272

192

184

544

368

320

RT Cores

82

80

68

48

46

68

46

40

Memory Size

24GB

12GB

10GB

8GB

8GB

11GB

8GB

8GB

Memory Bus

384-bit

384-bit

320-bit

256-bit

256-bit

352-bit

256-bit

256-bit

Memory Type

GDDR6X

GDDR6X

GDDR6X

GDDR6X

GDDR6

GDDR6

GDDR6

GDDR6

Memory Clock

19.5Gbps

19Gbps

19Gbps

19Gbps

14Gbps

14Gbps

14Gbps

14Gbps

Memory Bandwidth

936

912

760

608

448

616

448

448

ROPs

112

112

96

96

96

88

64

64

Texture Units

328

320

272

192

184

272

184

160

L2 cache (KB)

5,120

5,120

5,120

4,096

4,096

5,632

4,096

4,096

SLI

Yes

No

No

No

No

Yes

Yes

Yes

Power Connector (FE)

12-pin

12-pin

12-pin

12-pin

12-pin

8-pin + 8-pin

8-pin + 6-pin

8-pin + 6-pin

TGP (watts)

350

350

320

290

220

250

215

215

Founders Edition TDP (watts)

350

350

320

290

220

260

225

215

Suggested MSRP

$1,499

$1,199

$699

$599

$499

$999

$699

$499

Founders Edition MSRP

$1,499

$1,199

$699

$599

$499

$1,199

$799

$499


GeForce RTX 3070 Ti Analysis

The Ti model uses the full power of the second-rung GA104 Ampere die, translating to a design with 48 SMs, or two more than the non-Ti, Crunching the numbers reveals commensurately more shaders, RT Cores and Tensor Cores. Nvidia also takes the opportunity to increase base and boost frequencies by a small amount. The net result is an extra seven per cent shading power adjudged by comparing RTX 3070 Series Founders Editions cards to one another.

Hardly much to get excited about, you would think. Nvidia knows that it can’t add to the shader-core count without moving to a larger, more expensive die so does the next best thing by increasing the performance of the memory subsystem. It’s still 8GB running across a 256-bit bus, which feels eminently stingy for a premium GPU in 2021 – but now uses 19Gbps-rated GDDR6X memory instead of 14Gbps GDDR6. The move is an easy one to make as the faster GDDR6X memory is already present in the RTX 3080/Ti GPUs.

Cranking up the frequency realises some impressive on-paper gains. There’s 36 per cent more bandwidth that ought to come in useful at higher resolutions and image-quality settings. There’s no free lunch, however, as increasing the number of cores and utilising speedier memory cause the overall power consumption to rise significantly.

GeForce RTX 3070 Ti runs with a 290W TGP, up from 220W – a whopping 32 per cent increase – so it is very likely that Nvidia’s partners building these GPUs will use RTX 3080-optimised cooling instead of smaller cards we sometimes see in the RTX 3070/3060 Ti firmament.

In effect, Nvidia is using a brute-force approach to uplift RTX 3070 performance by up to 10 per cent. This move ought to put the new Ti at around rival Radeon RX 6800 levels, albeit with half the graphics memory. We have no qualms about how Nvidia has gone about constructing this specific GPU from a frequency point of view, but we’d have released the RTX 3070 Ti with 16GB of memory, using double-density modules, in the name of futureproofing. The only reason for not doing so rests with power because GDDR6X memory operating at 19Gbps is known to be power hungy.

Now we know how it’s built, let’s take a look at the Founders Edition model before running the benchmarks.


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